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Notes on tags used in MITgcmUV |
Notes on tags used in MITgcmUV |
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============================== |
============================== |
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o model/src: add a little initialisation trick to find_rho.F and find_alpha.F |
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to make TAF generate vectorizable code |
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o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows. |
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Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers |
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have flags that do this more efficiently. |
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o pkg/diagnostics/diagstats_calc.F |
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- for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact |
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o pkg/obcs (with exch2): |
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- derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F) |
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and remove code (in obcs_readparms.F) which was based on EXCH of indices |
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(through buffer) and did not account for exch2 (e.g., CS-grid) topology. |
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o pkg/exf and seaice exp: |
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- change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0) |
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so that switching off area & heff advection flags does not affect results. |
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- change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h |
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- keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef |
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EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update |
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results of verification experiments: 1D_ocean_ice_column(fwd), |
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global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8) |
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and offline_exf_seaice (all 4). |
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o pkg/seaice: |
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- remove array YNEG, RIVER, TMIX (replaced by local var) from common block; |
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remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef. |
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- fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY) |
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but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and |
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not multi-dim advection; |
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- fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and |
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SHORTWAVE_HEATING #undef. |
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o optim: make Makefile more robust (?) |
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o pkg/obcs: |
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* fix treatment of obcs_read_pickup for TAF |
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o pkg/shelfice: |
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* add missing initialisation of num_shifwflx |
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* new adjoint verification exp. for isomip |
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* change Prandtl and Schmidt numbers from generic formulations |
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(in terms of model diffus. and visc.) to separate runtime |
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parameters, with Holland and Jenkins (1999) default values. |
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o pkg/exf (interpolation): |
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- extended input field (2 rows) near the N & S poles: |
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* fill in with the symetric value (when even Nb of data in longitude) |
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* add average value at the poles only for scalar quantities ; for vector |
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component interpolation, skip the averaging and keep duplicated values, |
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unless the 2 components have same location (uvInterp=T) in which case |
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interpolate the 2 components together using S/R EXF_INTERP_UV. |
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- new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field |
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together: this allows to account properly for local orientation when |
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averaging at N & S pole. |
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- add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding |
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exf-interpolation near N & S poles. Undef by default. |
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- add debug check/print on 1rst iter if debugLevel >=2. |
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o pkg/exf: |
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- change masking flags definition (no longer "parameter"), put them in |
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common block and set them in S/R EXF_INIT_FIXED. |
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- change recognized masking flag from s,u,v to c,w,s since the mask |
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to use (maskC,W,S) depends on position on model grid and has little to |
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do with scalar/vector difference; fix masking if using P-coordinates. |
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- fix masking of wind-stress (was wrong if interpolated or read on A-grid) |
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and update results of exp. global_with_exf (x2). |
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- fix setting of zenith-angle table when SHORTWAVE_HEATING is undef. |
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o pkg/obcs |
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- S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate) |
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o pkg/exf (interpolation): |
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- assume periodicity in X only if input field cover full longitude range. |
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- improve search for lat. index (supposed to be faster, in ~log2(ny) steps, |
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and should vectorise). |
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- fix input lat of the 2 added row (in case we provide N.pole data). |
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checkpoint63h (2011/12/30) |
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o pkg/seaice: |
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- change declaration of UVM from _RL to _RS in order to get B-grid |
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uIce,vIce monitor when _RS = real*4 |
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o pkg/offline: |
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- new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags); |
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- compute vertical velocity if not read from file (switch on exactConserv |
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& staggerTimeStep); |
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- fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq. |
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o verification: |
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- update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input) |
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with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m": |
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fix Pb in yG definition @ 2 missing corners (previously yG was averaged); |
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- update output of exp. global_ocean.cs32x15.viscA4 after changing |
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grid-file angles (used here for coriolis-3d); |
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- remove (or gzip) few files not needed to run fizhi-cs experiments. |
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o pkg/exf (vector interpolation): |
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- rotate vector component toward local grid-axis orientation using grid-angles |
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(stored in GRID.h) instead of locally computed rotation angle; keep old code |
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available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default). |
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o pkg/seaice: |
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- allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION |
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undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined. |
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o pkg/PKG_OPTIONS.h files: |
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- move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h", |
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outside of the #ifdef ALLOW_THISPKG / #endif block. |
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- update verification/*/code/PKG_OPTIONS.h files. |
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o add a verification experiment (offline_exf_seaice/input.seaice) that test |
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the B-grid LSOR solver |
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o pkg/seaice: sort out emissivity and long wave radiation step 2: |
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- add emissivity for snow and ice as new run-time parameters |
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(unfortunately) that default to the corresponding exf values; this |
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changes results in most verification experiments so that for backward |
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compatibility these parameter have to be set explicitly to inconsistent |
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values (ugly); |
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- the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired |
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emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp |
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until we agree how to handle this bug properly |
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o pkg/exf (interpolation): |
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- add a set of run-time param ({inputfield}_interpMethod), one for |
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each interpolated input field, to select the interpolation method |
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with a value of zero switching off the interpolation; |
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- print interpolation parameters to standard output; |
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- refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined |
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(to use instead runoff_interpMethod=0 in data.exf). |
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- simplify default setting of interpolation parameters (for all fields, |
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set position to match model grid cell-center position, leading to trivial |
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interpolation in case of regular Lat-Lon grid) and fix for the case of |
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non-uniform delY. |
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o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for |
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within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1. |
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this factor is absolutely required, because the lw exitance (= out-going |
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long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown, |
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where the reflectivity rho = 1-emissivity for conservation reasons. Once |
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this is established, we can remove the CPP-Flag (if we want to). |
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o pkg/seaice: |
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- qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and |
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ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined |
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- sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity |
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what the name implies (and not emissivity*BoltzmannConstant), this means |
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the old default value of 5.5e-8 now means |
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5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in |
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S/R exf_readparms |
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- FV-discretization of the B-grid LSOR solver, turn on with |
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SEAICE_LSRBNEW. This new solver also involves a slight re-organization |
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of the calling routine dynsolver, so that B and C-grid code look a |
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little more alike. |
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- fix index bugs in ostres.F (B-grid code) |
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o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better |
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o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the |
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default for SEAICE_emissivity, if useEXF; requires setting a wrong |
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parameter value in global_ocean.cs32x15/input.seaice/data.seaice for |
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backward compatiblity |
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o model/src: use sigmaR in calc_ivdc |
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checkpoint63g (2011/12/16) |
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o pkg/seaice/seaice_growth.F: |
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fix heat conservation of the coupled ocean-seaice system. |
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when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of |
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solid vs liquid water treatment is resolved via QNET. |
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o pkg/seaice/seaice_growth.F: |
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add missing term for sublimation in saltFlux, which was breaking conservation. |
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o pkg/seaice/seaice_model.F: |
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Remove this patholigical case treatment in evolution branch, |
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where it is un-necessary and breaks conservation. |
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Update global_ocean.cs32x15/results accordingly for |
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output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt |
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o model/src: |
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useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in |
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external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE. |
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o pkg/obcs: |
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modify Stevens boundary conditions so that S/R obcs_calc_stevens computes |
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tendency for temperature and salinity that is then applied to update |
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theta and salt in S/R obcs_apply_ts; this requires proper masking of all |
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horizontal advection and diffusion contributions on the boundary (in |
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S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and |
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removing the mask in S/R timestep_tracer. The advantage of this approach is |
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that the updated tracer values include contributions from the surface |
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forcing and vertical diffusion. |
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This modification changes exp4.stevens because of vertical diffusion. |
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o model/src: |
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change non-curvilinear grid setting to also work with exch2 + blank tiles: |
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- move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst |
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face dimensions. |
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- new S/R INI_LOCAL_GRID to define model tile-local grid (using same units |
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as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID |
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and INI_SPHERICAL_POLAR_GRID. |
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change test-experiment global_ocean.90x40x15: |
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- split the domain in many more tiles (9x4 tiles of 10x10 each); |
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- switch to exch2 and remove 1 blank-tile (but only for MPI test). |
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- update results of both test (std & dwnslp). |
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o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in |
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tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation |
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o model/src: |
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- take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS |
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and fix initialisation when using sigma-coords. |
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o model/src: |
o model/src: |
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- improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc. |
- improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc. |
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to their current value at the beginning of forward_step.F": add a new run-time |
to their current value at the beginning of forward_step.F": add a new run-time |
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switch "doResetHFactors" (default=false) and use it to do (or not) the resetting. |
switch "doResetHFactors" (default=false) and use it to do (or not) the resetting. |
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- set doResetHFactors=T in the following test exp: |
- set doResetHFactors=T in the following test exp: |
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global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS), |
global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS), |
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