58 | | |
59 | | - AGRIF in the Med Sea |
60 | | |
61 | | Dobrinski P., Anav A., Lebeaupin Brossier C., Samson G., Stéfanon M., Bastin S., Baklouti M., Béranger K., Beuvier J., Bourdallé-Badie R., Coquart L., D'Andrea F., De Noblet-Ducoudré N., Diaz F., Dutay J.-C., Ethe C., Foujols M.-A., Khvorostyanov D., Madec G., Mancip M., Masson S., Menut L., Palmieri J., Polcher J. Turquety S., Valcke S., Viovy N., 2012: Modelling the Regional Coupled Eatrh System (MORCE):application to process and climate studies in vulnerable regions. Env. Modelling and Software, 35, 1-18 (10.1016/j.envsoft.2012.01.017) |
62 | | |
63 | | - AGRIF in the Gulf of Guinea: PhD of Henrick Berger (LPO, Brest, december 2012). |
| 47 | * AGRIF in the Med Sea |
| 48 | |
| 49 | Dobrinski P., Anav A., Lebeaupin Brossier C., Samson G., Stéfanon M., Bastin S., Baklouti M., Béranger K., Beuvier J., Bourdallé-Badie R., Coquart L., D'Andrea F., De Noblet-Ducoudré N., Diaz F., Dutay J.-C., Ethe C., Foujols M.-A., Khvorostyanov D., Madec G., Mancip M., Masson S., Menut L., Palmieri J., Polcher J. Turquety S., Valcke S., Viovy N., 2012: Modelling the Regional Coupled Eatrh System (MORCE):application to process and climate studies in vulnerable regions. Env. Modelling and Software, 35, 1-18 (10.1016/j.envsoft.2012.01.017) |
| 50 | |
| 51 | * AGRIF in the Gulf of Guinea: PhD of Henrick Berger (LPO, Brest, december 2012). |
67 | | - AGRIF in the Subpolar gyre: ERNA model configuration (1/8 zoom in the global ORCA05 model) |
68 | | |
69 | | C. Talandier, J. Deshayes, A-M. Treguier, X. Capet, R. Benshila, L. Debreu, R. Dussin, J-M. Molines, G. Madec: Improvements of simulated Western North Atlantic current system and impacts on AMOC, submitted to ocean modelling. |
70 | | |
71 | | |
72 | | |
| 55 | * AGRIF in the Subpolar gyre: ERNA model configuration (1/8 zoom in the global ORCA05 model) |
| 56 | |
| 57 | A. Talandier, J. Deshayes, A-M. Treguier, X. Capet, R. Benshila, L. Debreu, R. Dussin, J-M. Molines, G. Madec: Improvements of simulated Western North Atlantic current system and impacts on AMOC, submitted to ocean modelling. |
| 58 | |
| 59 | == REPORT OF THE WORKING GROUP MEETING (January 30, 2014) == |
| 60 | Participants : Rachid Benshila, Daley Calvert, Julien Calandreau, Jérome Chanut, Laurent Debreu, Christian Ethe, Rachel Furner, Claire Levy, Gurvan Madec, Sébastien Masson |
| 61 | |
| 62 | |
| 63 | |
| 64 | 1) Discuss the update of the 3.6 version |
| 65 | |
| 66 | |
| 67 | |
| 68 | History : |
| 69 | |
| 70 | - AGRIF version (and corresponding NEMO subroutines) has been updated by Julien Calandreau (INRIA) and Laurent |
| 71 | |
| 72 | - Jérome has made a lot of improvements and bug fixes in his Gilbraltar Strait configuration |
| 73 | |
| 74 | - Same for Sébastien in the Pulsation ANR project |
| 75 | |
| 76 | - Other developments in LIM, PISCES |
| 77 | |
| 78 | |
| 79 | |
| 80 | Bugs that have been identified and corrected since version 3.4 : |
| 81 | |
| 82 | - zwork array (J. Chanut): a global array « zwork » was defined in the libmpp module and (due to a bug in the AGRIF converter) this led to several problems and in particular the update step was not performed … |
| 83 | |
| 84 | - Diffusion coefficients in the corners of the sponge layern were wrong (J. Chanut) |
| 85 | |
| 86 | - Scale factors were not correctly computed in the ghost cells (where it is assumed that we are in full steps) (J. Chanut) |
| 87 | |
| 88 | è same problem for OBC |
| 89 | |
| 90 | - TKE (S. Masson): near the boundaries, spatial averaging operations led to wrong Kz in the first cell inside the high resolution domain. Extrapolation is possible but does not fulfill the requirement that with, a mesh refinement factor of 1, the obtained solution of the HR grid is identical to a solution computed without a zoom. S. Masson has implemented exchanges of TKE between coarse and fine grids. |
| 91 | |
| 92 | è Same problem for GLS and for OBC |
| 93 | |
| 94 | - Asselin Filter (J. Chanut) : when updating the « after » (n+1) fields, the corresponding corrections of the « now » fields linked with the Asselin filter were not done. |
| 95 | |
| 96 | - arrays out of bound in procnames in MPI (wrong declarations of AGRIF profiles in agrif_declare_variables: jpi, jpj have been replaced by ncli,nlcj) |
| 97 | |
| 98 | |
| 99 | |
| 100 | Bugs / Problems that have been identified |
| 101 | |
| 102 | · The bathymetry connection check is not complete (add a check that the coarse grid bathy have been correctly updated) |
| 103 | |
| 104 | · Reproducibility is not guaranteed (due to MPI problem) when ln_spc_dyn is set to true in namelist (which means that we take 0 as special value for dynamics in interpolations/updates). |
| 105 | |
| 106 | · Recursive updates. When more than 1 zoom level are set, the update should start from the highest resolution grid and go recursively to the root grid. Laurent implemented changes that makes this possible. |
| 107 | |
| 108 | |
| 109 | |
| 110 | - Use of AGRIF for degradation online (problème de north pole, coarsening) |
| 111 | |
| 112 | - Average operators with update values |
| 113 | |
| 114 | - High order operators with coastlines |
| 115 | |
| 116 | |
| 117 | |
| 118 | - BDY problem have been solved |
| 119 | |
| 120 | |
| 121 | |
| 122 | Rachid is ready do the merge (as soon the beta version is fixed) |
| 123 | |
| 124 | |
| 125 | |
| 126 | 2) What are the known problems / bugs? |
| 127 | |
| 128 | |
| 129 | |
| 130 | - Number of ghost cells |
| 131 | |
| 132 | o Antartic problem (periodicity): require only one ghost cell instead of 2 |
| 133 | |
| 134 | o Number of required ghost cells for high order advection schemes may be larger than 2 |
| 135 | |
| 136 | o -> Remove hardcoding of the number of ghost cells, do the required modifications to the AGRIF “profiles” (Laurent) |
| 137 | |
| 138 | - North fold problem ? |
| 139 | |
| 140 | - Timings for each grid |
| 141 | |
| 142 | |
| 143 | |
| 144 | 3) What are the main next developments? |
| 145 | |
| 146 | |
| 147 | |
| 148 | - Time splitting (OK for version 3.6, end of the year, Jérome) |
| 149 | |
| 150 | o only consider forward integration of the forcing mode permits to ensure volume conservation |
| 151 | |
| 152 | o (refluxing or conservative interpolation at the boundary). |
| 153 | |
| 154 | o Tells the users that we have only AGRIF working in time splitting version in the forward version of the code. |
| 155 | |
| 156 | - Parallel runs (Laurent) |
| 157 | |
| 158 | - Update of the parent grid rhs before barotropic step(s) |
| 159 | |
| 160 | |
| 161 | |
| 162 | 4) Version 5.0 (time and space schemes in the system). |
| 163 | |
| 164 | |
| 165 | |
| 166 | |
| 167 | |
| 168 | - Vertical grid refinement (Laurent) |
| 169 | |
| 170 | o Probably before version 5 |
| 171 | |
| 172 | - Online degradation using AGRIF |
| 173 | |
| 174 | - Agrif with variable volume |
| 175 | |
| 176 | o (update of the volume, and modification of boundary conditions) (Jérome). |
| 177 | |
| 178 | |
| 179 | |
| 180 | 5) Nesting tools: |
| 181 | |
| 182 | |
| 183 | |
| 184 | Two stages: |
| 185 | |
| 186 | a) for 3.6 version |
| 187 | |
| 188 | - agree on all the points: bathymetry smoothing, update of coarse grids (take the maximum as default) |
| 189 | |
| 190 | - Incorporate corrections done by Jean Marc |
| 191 | |
| 192 | - The nesting tools are only essential for the creation of bathymetry: |
| 193 | |
| 194 | o Do a list available tools for 2D/3D interpolation |
| 195 | |
| 196 | o For 3.6 keep the 3D fields interpolation in nesting tools |
| 197 | |
| 198 | |
| 199 | |
| 200 | b) next version |
| 201 | |
| 202 | |
| 203 | |
| 204 | - The definition of vertical coordinates should be done outside NEMO |
| 205 | |
| 206 | - Nesting tools for the s coordinates |
| 207 | |
| 208 | |
| 209 | |
| 210 | 5) Documentation: |
| 211 | |
| 212 | - Update of the nesting tools 3.6 documentation |
| 213 | |
| 214 | - Update of the users guide: describes what is possible or not with AGRIF. |
| 215 | |
| 216 | - Documentation for nesting in NEMO/AGRIF: starts from the notes of Sebastien, then circulate the powerpoint |
| 217 | |
| 218 | - GMD paper |
| 219 | |
| 220 | |
| 221 | |
| 222 | 6) Standard configuration and sanity tests |
| 223 | |
| 224 | |
| 225 | |
| 226 | The standard configuration should: |
| 227 | |
| 228 | - Include more than one level of embedding (test of the recursive update starting from the finer resolution grid(s)) |
| 229 | |
| 230 | - Uses time splitting |
| 231 | |
| 232 | - Include a zoom in a sea ice area (Labrador Sea, LIM3) |
| 233 | |
| 234 | - Include a zoom with PISCES |
| 235 | |
| 236 | - Zoom in Perou Chili |
| 237 | |
| 238 | |
| 239 | |
| 240 | Sanitiy tests |
| 241 | |
| 242 | - Zoom with a mesh refinement of 1 |
| 243 | |
| 244 | - Test constancy preservation for tracers |
| 245 | |
| 246 | |
| 247 | |
| 248 | Longer visions of having AGRIF zoom in AMM |
| 249 | |
| 250 | S coordinates zoom inside a z coordinate parent grid. |