Add trop+strat chemistry scheme #100
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gold2718
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Summary: Introduction of the ability to run with more complex atmospheric gas-phase chemistry. Contributors: Dirk Olivié Reviewers: Steve Goldhaber Purpose of changes: #100 Add trop+strat chemistry scheme. The new scheme is a combination of the aerosols from OSLO_AERO and the gas-phase species from the TS1 chemistry (pp_trop_strat_mam4_vbs). Github PR URL: #149 Changes made to build system: None Changes made to the namelist: - The namelist used by the new compsets contains elements from the standard aerosol-only NorESM namelist, but some external forcings have been removed as not used anymore (ozone climatology, ozone climatology, volcanic stratospheric AOD). - New things are : more emissions files are used, more GHGs/ODSs are prescribed, and the lightning NOx scaling factor is now used. - Concerning MEGAN fluxes from the land-model : more species are mapped into monoterpene (to make it more in line with CESM). - 3D-chemical species are taken into account in the radiation Changes to the defaults for the boundary datasets: - there are additional emission files - some climatologies are not used anymore (ozone, oxidants) Substantial timing or memory changes: an N1850_f19_tn14 simulation on 1024 CPUs is much slower. The throughput is 8.67 simulated years/day (compared to 19.84 simulated years/day in aerosol-only version) Detailed description of changes : General files : bld/config_files/definition.xml [new chemical package "tropstrat_mam_oslo] Files in specific chemistry directory pp_tropstrat_mam_oslo (generated by chemical preprocessor): Test run: ERP_D_Ln9.f19_f19_mtn14.NF1850norbc_tropstratchem.betzy_intel.cam-outfrq aux_cam_noresm tests are BFB except for this new test
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Can be closed since the PR has completed? |
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Hi Øyvind, yes can be closed. Best regards, Dirk |
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What is the feature/what would you like to discuss?
Add a new chemistry scheme that covers both the troposphere and stratosphere for the NorESM2.3 release.
Note, this scheme will include both bromoform and explicit volcanic emissions.
Will this change (regression test) answers?
A new regression test will be introduced
Will you be implementing this enhancement yourself?
No
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