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revision 1.1539 by jmc, Wed Nov 30 15:43:29 2011 UTC revision 1.1587 by jmc, Thu Feb 2 02:06:32 2012 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/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
8      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
9        conductive heat flux F_c , and add it explicitly when updating tsurf as
10        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
11        so that now F_ia has a consistent meaning through the entire routine.
12        This causes differences at truncation level: update output of fwd exp.
13        global_ocean.cs32x15.seaice.
14    o pkg/seaice:
15      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
16        of arrays, sign/direction of fluxes; no effect on results.
17      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
18        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
19        note: this should have been done before changing celsius2K default.
20      - to keep results unchanged, add back old value of celsius2K in verification
21        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
22      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
23        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
24        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
25        freezing temp is consistent with value in seaice_growth.F ; this causes
26        differences at machine truncation level: update lab_sea AD output (3/4).
27    o pkg/seaice:
28      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
29        and climsst/sss even when using seaice (to prevent calculation that might
30        use SST on land); does not affect any verification exp.
31      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
32        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
33    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
34      over land (non-legacy code)
35    o vectorize salt_plume package:
36      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
37      - this code computes plumebk everywhere (also over land), thus requires
38        code to avoid divisions by zero and catch the case of kLev=Nr.
39      - efficiency of salt_plume_frac is still sub-optimal
40    o tools (genmake2):
41      - fix makefile NAME specification (option: -makefile NAME) by adding
42        "-f $MAKEFILE" in few places where it was missing including makedepend
43        command (contribution from Paul).
44    
45    checkpoint63i (2012/01/24)
46    o model/src:
47      - add factorized versions of some EOS code to find_rho.F,
48        define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
49    o model/src:
50      - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
51      - change default celsius2K from 273.16 to 273.15
52      - to keep results unchanged, add back old value of celsius2K in verification
53        exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
54         global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
55    o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
56      to make TAF generate vectorizable code
57    o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
58       Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
59       have flags that do this more efficiently.
60    o pkg/diagnostics/diagstats_calc.F
61      - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
62    o pkg/obcs (with exch2):
63      - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
64        and remove code (in obcs_readparms.F) which was based on EXCH of indices
65        (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
66    o pkg/exf and seaice exp:
67      - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
68        so that switching off area & heff advection flags does not affect results.
69      - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
70      - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
71        EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
72        results of verification experiments: 1D_ocean_ice_column(fwd),
73        global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
74        and offline_exf_seaice (all 4).
75    o pkg/seaice:
76      - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
77        remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
78      - fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY)
79        but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and
80        not multi-dim advection;
81      - fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and
82        SHORTWAVE_HEATING #undef.
83    o optim: make Makefile more robust (?)
84    o pkg/obcs:
85      * fix treatment of obcs_read_pickup for TAF
86    o pkg/shelfice:
87      * add missing initialisation of num_shifwflx
88      * new adjoint verification exp. for isomip
89      * change Prandtl and Schmidt numbers from generic formulations
90        (in terms of model diffus. and visc.) to separate runtime
91        parameters, with Holland and Jenkins (1999) default values.
92    o pkg/exf (interpolation):
93      - extended input field (2 rows) near the N & S poles:
94        * fill in with the symetric value (when even Nb of data in longitude)
95        * add average value at the poles only for scalar quantities ; for vector
96          component interpolation, skip the averaging and keep duplicated values,
97          unless the 2 components have same location (uvInterp=T) in which case
98          interpolate the 2 components together using S/R EXF_INTERP_UV.
99      - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
100        together: this allows to account properly for local orientation when
101        averaging at N & S pole.
102      - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
103        exf-interpolation near N & S poles. Undef by default.
104      - add debug check/print on 1rst iter if debugLevel >=2.
105    o pkg/exf:
106      - change masking flags definition (no longer "parameter"), put them in
107        common block and set them in S/R EXF_INIT_FIXED.
108      - change recognized masking flag from s,u,v to c,w,s since the mask
109        to use (maskC,W,S) depends on position on model grid and has little to
110        do with scalar/vector difference; fix masking if using P-coordinates.
111      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
112        and update results of exp. global_with_exf (x2).
113      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
114    o pkg/obcs
115      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
116    o pkg/exf (interpolation):
117      - assume periodicity in X only if input field cover full longitude range.
118      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
119        and should vectorise).
120      - fix input lat of the 2 added row (in case we provide N.pole data).
121    
122    checkpoint63h (2011/12/30)
123    o pkg/seaice:
124      - change declaration of UVM from _RL to _RS in order to get B-grid
125        uIce,vIce monitor when _RS = real*4
126    o pkg/offline:
127      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
128      - compute vertical velocity if not read from file (switch on exactConserv
129        & staggerTimeStep);
130      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
131    o verification:
132      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
133        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
134        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
135      - update output of exp. global_ocean.cs32x15.viscA4 after changing
136        grid-file angles (used here for coriolis-3d);
137      - remove (or gzip) few files not needed to run fizhi-cs experiments.
138    o pkg/exf (vector interpolation):
139      - rotate vector component toward local grid-axis orientation using grid-angles
140        (stored in GRID.h) instead of locally computed rotation angle; keep old code
141        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
142    o pkg/seaice:
143      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
144        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
145    o pkg/PKG_OPTIONS.h files:
146      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
147        outside of the #ifdef ALLOW_THISPKG / #endif block.
148      - update verification/*/code/PKG_OPTIONS.h files.
149    o add a verification experiment (offline_exf_seaice/input.seaice) that test
150      the B-grid LSOR solver
151    o pkg/seaice: sort out emissivity and long wave radiation step 2:
152      - add emissivity for snow and ice as new run-time parameters
153        (unfortunately) that default to the corresponding exf values; this
154        changes results in most verification experiments so that for backward
155        compatibility these parameter have to be set explicitly to inconsistent
156        values (ugly);
157      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
158        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
159        until we agree how to handle this bug properly
160    o pkg/exf (interpolation):
161      - add a set of run-time param ({inputfield}_interpMethod), one for
162        each interpolated input field, to select the interpolation method
163        with a value of zero switching off the interpolation;
164      - print interpolation parameters to standard output;
165      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
166        (to use instead runoff_interpMethod=0 in data.exf).
167      - simplify default setting of interpolation parameters (for all fields,
168        set position to match model grid cell-center position, leading to trivial
169        interpolation in case of regular Lat-Lon grid) and fix for the case of
170        non-uniform delY.
171    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
172       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
173       this factor is absolutely required, because the lw exitance (= out-going
174       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
175       where the reflectivity rho = 1-emissivity for conservation reasons. Once
176       this is established, we can remove the CPP-Flag (if we want to).
177    o pkg/seaice:
178      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
179        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
180      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
181        what the name implies (and not emissivity*BoltzmannConstant), this means
182        the old default value of 5.5e-8 now means
183        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
184        S/R exf_readparms
185      - FV-discretization of the B-grid LSOR solver, turn on with
186        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
187        of the calling routine dynsolver, so that B and C-grid code look a
188        little more alike.
189      - fix index bugs in ostres.F (B-grid code)
190    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
191    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
192      default for SEAICE_emissivity, if useEXF; requires setting a wrong
193      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
194      backward compatiblity
195    o model/src: use sigmaR in calc_ivdc
196    
197    checkpoint63g (2011/12/16)
198    o pkg/seaice/seaice_growth.F:
199      fix heat conservation of the coupled ocean-seaice system.
200      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
201      solid vs liquid water treatment is resolved via QNET.
202    o pkg/seaice/seaice_growth.F:
203      add missing term for sublimation in saltFlux, which was breaking conservation.
204    o pkg/seaice/seaice_model.F:
205      Remove this patholigical case treatment in evolution branch,
206      where it is un-necessary and breaks conservation.
207      Update global_ocean.cs32x15/results accordingly for
208      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
209    o model/src:
210      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
211      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
212    o pkg/obcs:
213      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
214      tendency for temperature and salinity that is then applied to update
215      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
216      horizontal advection and diffusion contributions on the boundary (in
217      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
218      removing the mask in S/R timestep_tracer. The advantage of this approach is
219      that the updated tracer values include contributions from the surface
220      forcing and vertical diffusion.
221      This modification changes exp4.stevens because of vertical diffusion.
222    o model/src:
223      change non-curvilinear grid setting to also work with exch2 + blank tiles:
224      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
225        face dimensions.
226      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
227        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
228        and INI_SPHERICAL_POLAR_GRID.
229      change test-experiment global_ocean.90x40x15:
230      - split the domain in many more tiles (9x4 tiles of 10x10 each);
231      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
232      - update results of both test (std & dwnslp).
233    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
234       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
235    o model/src:
236      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
237        and fix initialisation when using sigma-coords.
238    o model/src:
239     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
240       to their current value at the beginning of forward_step.F": add a new run-time
241       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
242     - set doResetHFactors=T in the following test exp:
243        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
244        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
245        and tutorial_global_oce_in_p (nonLinFS in p)
246    o pkg/ecco
247      - added IES cost term
248    o verification/advect_xz
249      - scale down the depth by 1/100 (from 200 km to just 2.km)
250      - add secondary test using divergent flow, r-star and implicit vertical advection.
251      - add note (check_conserve_TS.txt) and matlab script to check global
252        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
253    o pkg/rbcs:
254      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
255    o pkg/obcs (Stevens BCs):
256      - fix various problems in the phase speed computations of the Stevens
257        boundary conditions:
258        - sign error for western and southern boundaries,
259        - time tendencies were underestimated by factor of dTracerLev and some just
260          zero (for multidim advection schemes) -> now estimate time tendencies
261          from difference between previous (n) time level and the one before (n-1);
262          this requires storing a field per tracer per boundary, also in the pickup
263          files.
264        - replace deltaTmom in cflMer/Zon computation with dTracerLev
265        - set default phase velocity to cflMer/Zon
266      - update verification experiment exp4.stevens
267    o pkg/generic_advdiff (implicit_r):
268      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
269        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
270      - fix implicit vertical diffusion or advection with NonLin FreeSurf
271        (was using current recip_hFacC instead of future recip_hFacC): set future
272        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
273        solver S/R ;
274      - fill diagnostics of vertical advective fluxes (computed from tendency)
275        when using implicit vert. advection;
276      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
277         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
278         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
279         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
280    o pkg/diagnostics:
281      - add diags for T & S tendency which goes through Adams-Bashforth.
282    
283  checkpoint63f (2011/11/30)  checkpoint63f (2011/11/30)
284  o pkg/obcs/obcs_calc_stevens.F:  o pkg/obcs/obcs_calc_stevens.F:
285    - join some loops to reduce number of if-statements    - join some loops to reduce number of if-statements

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