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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 Non-Hydrostatic: |
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- put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h |
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- fix exchange calls for CS-grid using the new EXCH_S3D_RL. |
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o Allow to apply AB on T,S rather than on AB(gT,gS): |
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- implemented within #ifdef ALLOW_ADAMSBASHFORTH_3 |
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- use the same arrays (gtNm,gsNm) to hold tracer field at previous |
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time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)). |
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- need a "clever" read_pickup to restart from the other AB formulation |
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o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h |
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o remove some unused variables (reduces number of compiler warnings) |
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o adjoint |
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* Disable useVariableViscosity for adjoint for time being |
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(there are a number of extensive recomputations) |
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* Initialize certain variables needed for adjoint |
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checkpoint57w_post |
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o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names |
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fix the singleCpuIO RS version of MDSWRITEFIELD |
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and add a WARNING if using globalFiles=T with multi-processors. |
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o write grid-file(s) in only one format (MDS or MNC): default=MNC (if |
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using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc |
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o tracer advection scheme: |
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add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get |
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those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile, |
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was not very convenient). |
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add implicit version for DST-3 & DST3_Flux_Limit vertical advection; |
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(further tests needed for the implicit DST & Flux-Limiter schemes). |
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o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef |
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and sRef for convenience, handy, when you want to initialize |
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ptracers in a large domain with a constant non-zero value. Also, |
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untangle ptracers_init.F a little. |
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checkpoint57v_post |
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o change dome exp. to use variable viscosity in side-drag terms. |
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o remove all the files from the cfc_offline test since they are now |
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incorporated into tutorial_cfc_offline which has been producing |
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identical results for a few days of testing |
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o add new parameter: sideDragFactor to enable half-slip-side BC |
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and change side-drag S/R to use viscosity from mom_calc_visc |
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(can switch back by setting sideDragFactor=0.); affects results at |
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truncation level; regenerate output for exp.: global_ocean.cs32x10(x3), |
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global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5). |
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o vorticity & strain are now computed without masking, to account for |
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no-slip-side BC in variable viscosity calculation ; mask is applied |
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anyway later on, before computing advection/coriolis terms. |
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o modify exp4 to test new obcs support for reading from external files |
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and for passive tracers |
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o fix behavior of ptracers_monitor when monitor output is written to a |
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netcdf-file; still not independent of monitor.F (writes in the same |
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file). |
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o change default value of tRef (put a uniform, meaningful value for ocean |
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& atmos) and initialize sRef (was missing, as Martin mentioned). |
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o Redefine viscC?Leith*. Change the coefficients of Leith viscosity |
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to be proportional to enstrophy dissipation length. Thus, |
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viscC?leith?_new=pi*(viscC?leith?_old)^(1/3) |
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This is now consistent with Smagorinsky and with the manual. |
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checkpoint57u_post |
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o OBCS and PTRACERS: add open boundary support for passive tracers |
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- either use homogenous (pseudo) v.Neumann conditions or prescribe |
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OB-values from file; this is not different from the way theta and salinity |
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are treated |
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- however, Orlanski-radiation conditions are not supported, and the model |
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will stop if you use pTracers and Orlanski at the same time. |
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- beefed up the rountine obcs_external_fields_load: now only those open |
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boundary values are overwritten with values from files for which there |
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are really files, otherwise the OB-fields remain untouched. This makes |
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it possible to use different OBs at different ends of the domain (as |
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with EXF) |
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o reduce number of exch calls in shap_filt (s2). |
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o CS-grid: fix divergence contribution to Leith viscosity. Affects (@ |
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truncation level) 4/5 MLAdjust test results (11&12 digits match). |
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checkpoint57t_post |
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o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4 |
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o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get |
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same truncation, independent of the face number: affects affects several |
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test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5). |
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o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times); |
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note that biharmonic viscosity + no-slip was not tested in any experiment. |
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o fix bug in non-linear free-surf side-drag ; generate new output for |
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global_ocean.cs32x15(+.thsice) & global_ocean_pressure. |
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o make mnc honor the writeBinaryPrec flag for most kinds of output |
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o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum |
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o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation |
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error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5). |
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o add brackets in multi-terms sum to get same truncation, independent of |
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the face number (manage to get exactly same value of gU,gV at the cs-edge) |
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affects several test. exp. Update global_ocean.cs32x15 (+.thsice). |
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o Clean, new version of mom_calc_visc. Adds a new feature, viscAhRemax |
o Clean, new version of mom_calc_visc. Adds a new feature, viscAhRemax |
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and viscA4Remax, which allow one to limit the minimum viscosity by specifying |
and viscA4Remax, which allow one to limit the minimum viscosity by specifying |
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a maximum grid-scale Reynolds number. Also, changes all length calculations |
a maximum grid-scale Reynolds number. Also, changes all length calculations |
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