| 1 | RFMIP piClim-4co2 experiment with double radiation call for GHG: |
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| 2 | it allows calculating IRF of 4xcO2 at TOA and SRF. |
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| 3 | |
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| 4 | In PARAM/config.def_preind : |
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| 5 | co2_ppm=4*co2_preind =11.3728e+02 |
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| 6 | co2_ppm_per=co2_preind =2.8432e+02 |
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| 7 | |
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| 8 | COMP/lmdz.card points to modified files *xml stocked in PARAM: |
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| 9 | context_lmdz.xml_2RadCall : includes new grid "presnivs0srf" to extract only the surface (level 1) of 3D variables |
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| 10 | field_def_lmdz.xml_2RadCall : variables "r**4co2" in groups "TOA", "SRF" et "3D" (in which SRF is included) |
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| 11 | file_histday_lmdz.xml_2RadCall : output only activated for groups "TOA" and "3D" |
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| 12 | |
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| 13 | NOTE: IRF at tropopause can't be calculated from this run, |
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| 14 | because the "*_tropopause" and 3D radiative variables from 1st call are absent. |
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| 15 | The SRF radiation values from 2nd call are those for the bottom level of the corresponding 3D variables. |
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| 16 | |
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| 17 | The IRF at tropopause for 4xCO2 was calculated on 1 year of run extending this one, and including all the needed variables : |
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| 18 | /ccc/cont003/home/gencmip6/p25sima/RFMIPi/modipsl/config/LMDZOR_v6/CM616-LR-piClim-4xCO2-5-2RadCall-IRFtropo |
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| 19 | |
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| 20 | THE BEST thing to do in order to run a simulation allowing the calculation of IRF at tropopause, |
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| 21 | IS to use the *2RadCall files from piClim-histall/CM619-LR-piClim-histall-2, |
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| 22 | including the dedicated file_def_histmth_lmdz.xml_2RadCall_ForIRFtropo |
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| 23 | (with the associated adaptations in the lmdz.card for file output, post-processing and TS) : |
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| 24 | -> 2D radiation variables from 1st and 2nd call for TOA and SFC are output in "histmth" |
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| 25 | -> whereas the 3D and the *tropopause variables are output in a separate file "histmthForIRFtropo" |
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| 26 | that can be erased after producing TS_MO for all these variables in the post-processing. |
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