Changes between Version 32 and Version 33 of ticket/1593_CNRS9_NOC3_LDF
- Timestamp:
- 2015-10-17T10:14:48+02:00 (9 years ago)
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ticket/1593_CNRS9_NOC3_LDF
v32 v33 15 15 NB: This development consists in merging the current trunk with the last year work on that subject (see ticket #1260, and the associated branch 2014/dev_CNRS0_NOC1_LDF and wiki page 1260_CNRS0_NOC1_LDF. 16 16 17 ''Simplification'': [[BR]](1) define bilaplacian operators on dynamics and tracers as re-entrant laplacian ;[[BR]](2) change the way the eddy diffusivity and viscosity are specified and controlled by the user ; add a new choice (read the coeff. in a file) ;[[BR]](3) generalize of the use of surface scale factors and their inverse ;[[BR]](4) add a optional read of surface scale factors in coordinate file in case of reduction of the scale factors in some straits (allows to suppress hard coded ORCA staff in domhgr.F90).[[BR]](5) suppress some CPP keys : key_ldfslp ; ley_ldftra_eiv ; key_traldf_ano ; key_traldf_c1d, _c2d, c3d ; key_dynldf_c1d, _c2d, c3d ; key_esopa (from traldf and traadv routines) ; 17 ''Simplification'': [[BR]](1) define bilaplacian operators on dynamics and tracers as re-entrant laplacian ;[[BR]](2) change the way the eddy diffusivity and viscosity are specified and controlled by the user ; add a new choice (read the coeff. in a file) ;[[BR]](3) generalize of the use of surface scale factors and their inverse ;[[BR]](4) add a optional read of surface scale factors in coordinate file in case of reduction of the scale factors in some straits (allows to suppress hard coded ORCA staff in domhgr.F90).[[BR]](5) suppress some CPP keys : key_ldfslp ; ley_ldftra_eiv ; key_traldf_ano ; key_traldf_c1d, _c2d, c3d ; key_dynldf_c1d, _c2d, c3d ; key_esopa (from traldf and traadv routines) ;[[BR]](6) remove Smagorinsky dependent eddy viscosity and diffusivity 18 18 19 19 ''Improvements'': [[BR]] (1) introduce Beckers et al. (2000) compact stencil in the cross-isoneutral direction in triads formalism ; [[BR]] (2) introduce in both iso-neutral operator the Method of Stabilizing Correction (Lemarié et al. (2012) (it minimizes numerical errors, and allows the implementation of bilaplacian iso-neutral operator)''' ''';(3) implement bi-laplacian iso-neutral operators (Lemarié et al. (2012). … … 23 23 Three steps: [[BR]] 24 24 25 ''' I. Phasing of horizontal scale factors ''' ===>>> OK see ''' revision [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5737] ''' + minor correction''' revision [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5737](SETTE OK)'''25 ''' I. Phasing of horizontal scale factors ''' ===>>> OK see ''' revision [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5737] ''' + minor correction''' revision [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5737] (SETTE OK)''' 26 26 27 27 ''' (I.1)''' standardisation of the name of quantities derived from horizontal scale factors (many modules of NEMO)[[BR]]The chosen names of quantities derived from horizontal scale factors are:[[BR]]- inverse of scale factors : r1_e1t, r1_e2t, r1_e1u, r1_e2u, r1_e1v, r1_e2v, r1_e1f, r1_e2f ;[[BR]]- surfaces and their inverse: e1e2t, e1e2u , e1e2v, e1e2f and, r1_e1e2t , r1_e1e2u , r1_e1e2v, r1_e1e2f ;[[BR]]- ratio (used in traldf...) : e2_e1u , e1_e2v(I.1) generalize of the use of surface scale factors ;[[BR]]These quantities are defined in memory in dom_oce.F90, and set to their proper value in domhgr.F90 … … 29 29 ''' (I.2)''' add a optional read of surface scale factors at velocity points in coordinate file (domhgr.F90)[[BR]] The input coordinate file have to include e1e2u and e1e2v in case of reduction of the scale factors in some straits.[[BR]] When e1u or e2v are reduced in some straits, the surface at u- and v-points remains unchanged.[[BR]] This allows to suppress the dom_vvl_orca_fix routine from dlmvvl.F90 module.[[BR]]''Note that this change modifies the model results'', as it contains a better handling of reduced strait width (i.e. reduced surface between 2 adjacent U or V points, but unchanged U and V points volume).[[BR]] The implementation performed here is a first step to the full simplification of domhgr.F90. We kept here the hard coded reduction of scale factor in some straits for some given ORCA configuration. [[BR]] A last step (see IV) will be to suppress the hard coded reduction of some scale factor as it will be always given in the coordinates.nc file together with the e1e2u & e1e2v surfaces. ===>>> OK see '''revision [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5755]''' 30 30 31 ''' [[BR]] [[BR]]II. Phasing of the advective/diffusive trends on tracers'''31 ''' [[BR]] [[BR]] II. Phasing of the advective/diffusive trends on tracers''' 32 32 33 33 '''II.1 —''' '''LDF on tracers''' (both TRA & TRC) - Diffusive trends : ''' '''===>>> OK see '''revision [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5758] & [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5759] and [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5760] with SETTE OK''' … … 123 123 * Atmospheric pressure forcing: change to a systematic call of sbc_apr in step.F90 (with or without BDY) and remove its call from sbcmod[[BR]]- remove key_vectopt_loop from all the code except in domzgr_substitute.h90 (it is an obsolescent feature only adapted to vector computers)[[BR]]- remove all "!CDIR " lines = NEC vector compiler instructions 124 124 125 ''' [[BR]] [[BR]] III. Phasing of momentum trends ''' ===>>> OK see ''' revision [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5777] & [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5778] and [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5782]with SETTE OK'''125 ''' [[BR]] [[BR]] III. Phasing of momentum trends ''' ===>>> OK see ''' revision [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5777] & [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5778] and [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5782] with SETTE OK''' 126 126 127 127 '''III.1 —''' '''LDF on dynamics''' - viscous trends … … 195 195 '''(IV.2) ''' specification of lateral friction at the coast.[[BR]]Issue: the different values of fmask at the coast have been removed so that this lateral boundary condition doesn't affect the advective term (''' double check that''' !). fmask is still used for laplacian and bilaplacian viscosities. Nevertheless, the magnitude of lateral friction depends on the magnitude of ahm (bhm, reap.). It seems better to define this magnitude [[BR]]Solution: [[BR]]- '''add''' a scalar in the coordinate file which is equal to the grid-size at the equator even if Equator is not in the domain and use this scalar to compute the grid-size dependency of the coefficients. 196 196 197 ''' V. Pending issues : to be solved in 2016 ?'''197 ''' V. Pending issues : to be solved in 2016 ?''' 198 198 199 199 '''(V.1)''' Add a proper coding of Smagorinsky eddy viscosity and diffusivity... … … 201 201 '''(V.2)''' It should be possible to remove hdivn ... think about that 202 202 203 [[BR]] '''Next Step :'''203 [[BR]] ''' Next Step :''' 204 204 205 205 Starting from this branch, another branch is created ('''given the name here''') which will contain the following item (random order):
