| 194 | 194 | Ideally wind fields for the year 1750 should be used for the pre-industrial run. However, ERAI data only start in 1958 so such files do not exist. Consequently, the 1980 to 2011 wind fields are used to nudge the pre-industrial simulation. the assumption we make here is that the winter patterns outside the nudged area have not changed dramatically between 1980 and 1750. For a strongly zoomed simulation over Europe that is probably an acceptable assumption. The years 1980 to 2011 have been prepared for the 128x118 zoomed grid and are stored at /ccc/work/cont003/dsm/p86ipsl/IGCM/BC/ATM/LMDZ/LMD128118/NUDGE_FILES/ERAI. If you are not using a zoomed grid that has been used previously, or you want to use the 128*118 grid for different years, you will have to prepare your own nudging files. ERAI nudging files for wind (u and v) can be interpolated to the zoomed grid using the method described here : [https://forge.ipsl.jussieu.fr/igcmg/wiki/platform/en/documentation/I_modeles/B_LMDZ#Interpolationofnudgefiles]. Note that you must be in the group subipsl to have the permission to access these files. Contact Anne Cozic for TGCC to be added to subipsl. |
