Changes between Version 9 and Version 10 of Documentation/UserGuide/PresentDay
- Timestamp:
- 2014-11-24T12:01:55+01:00 (9 years ago)
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Documentation/UserGuide/PresentDay
v9 v10 67 67 }}} 68 68 === config.card === 69 Use the same begin and end date of the ELI experiment. For the ELI experiment we have to make use observed BC so all BC will be from prior to 2010. A 30-year experiment does requires that we run the ELI from 1981 to 2010. We don't want to use the 1981 conditions so we will compensate for this by adjusting the dates of files , in the COMP settings.69 Use the same begin and end date of the ELI experiment. For the ELI experiment we have to make use observed BC so all BC will be from prior to 2010. A 30-year experiment does requires that we run the ELI from 1981 to 2010. We don't want to use the 1981 conditions so we will compensate for this by adjusting the dates of files in the COMP settings or by preparing cyclic or even static files. 70 70 71 71 Given we want to simulate the equilibrium climate with the surface we should provide an initial condition of the vegetation. As an initial condition we use the restarts of an off-line simulation. Remember to use a restart for both the SRF and SBG component! … … 199 199 List= () 200 200 ListNonDel= (/ccc/work/cont003/dofoco/dofoco/MAPS/LITTER_DEMAND/RGRID/litter_demand_map_2010.nc, litter_map.nc), \ 201 (/ccc/work/cont003/dofoco/dofoco/MAPS/FM/RGRID/fm_strat_map_2010 .nc, FMmap.nc)201 (/ccc/work/cont003/dofoco/dofoco/MAPS/FM/RGRID/fm_strat_map_2010_mean.nc, FMmap.nc) 202 202 203 203 [SmoothFiles] … … 205 205 }}} 206 206 207 === Ground work for adjusting dates ===208 Because we have BC files for a present day experiment but also for pre-industrial experiment we changed the name of the BC folder by adding the suffic '-2010'. We have to make sure that LMDZOR finds the correct BC by adding this suffix. The ELI files go from 1981 to 2010 but we often don't want to use the 1981 conditions so in those cases we will hard code the date to 2010.209 210 ??????????????????????211 The nudging files212 and fixing the year to 2010 rather than the date in the config.card (which was in turn adjusted to ensure that the ELI simulation could be run for the length of our experiment, i.e., 30 years):213 Following, more settings need to be changed and/or confirmed before launching the job:214 (1) We now have to set-up the job to create files for the boundary conditions (BC) for the years 1751 to 1780 but we have no driver files for these years so we use the earliest years available. That varies from data stream to data stream so we used a creative solution. We are limited, for example by the SST and sea ice files that only go back until 1870. So we assume that the SST in 1870 represents pre-industrial conditions.215 216 Open '''.../libIGCM/libIGCM_config/libIGCM_config.tsh''' and search for the phrase '# BEGIN: SHOULD GO IN A FUNCTION FROM libIGCM_date.ksh'. Then add:217 {{{218 # BEGIN: SHOULD GO IN A FUNCTION FROM libIGCM_date.ksh219 # Compute year_m1 and year_p1 (year minus 1Y and year plus 1Y)220 year_m1=$(( year - 1 ))221 year_p1=$(( year + 1 ))222 # First year for SST 1870 = 1751 + 119223 year_sst=$((year + 119))224 # First year for O3 is 1855 = 1751 + 104225 year_o3=$((year + 104))226 # First year for nudged wind fields 1980 = 1751 + 229227 year_nudge=$((year + 229))228 # First year of pre-industrial forcing 1765 = 1751 + 14229 year_preind=$((year + 14))230 }}}231 (2) These newly defined years now have to be used in COMP/lmdz.card.232 ?????????????????233 207 234 208 === PARAM/config.def_actuel === 235 Double check whether in PARAM/config.def_preind the aerosol setting is as follows: 209 Double check whether in PARAM/config.def_preind the pmagic setting matches the setting of the actual ELI experiment and in turn the setting of Pmagic of the pre-industrial run. In this set-up pmagic was 0.000 thus 210 {{{ 211 pmagic=0.000 212 }}} 213 and check whether the aerosol setting is as follows: 236 214 {{{ 237 215 aer_type=actuel 238 216 }}} 239 All other settings are set to _AUTO_ and should thus be automatically taken into account. The regridded aerosol data can be found at /ccc/work/cont003/dsm/p86ipsl/IGCM/BC/ATM/LMDZOR/LMD128118/AR5/HISTORIQUE/aerosols_11YearsClim_1860_v5.nc. In COMP/lmdz.card some of the aerosol settings can be manually set (see below). 217 All other settings are set to _AUTO_ and should thus be automatically taken into account. 218 219 220 !!!!!!!!!!!!!!!!! 221 The regridded aerosol data can be found at /ccc/work/cont003/dsm/p86ipsl/IGCM/BC/ATM/LMDZOR/LMD128118/AR5/HISTORIQUE/aerosols_11YearsClim_1860_v5.nc. In COMP/lmdz.card some of the aerosol settings can be manually set (see below). 240 222 241 223 === COMP/lmdz.card ===