Overview:

This is an atmosphere-only compset with perpetual 1850 forcings based on CMIP6 input4mips data. The letter "S" in the name stands for "special" to differentiate from the default atmosphere use case (F1850C5-CMIP6) for the DECK coupled compset A_WCYCL1850S_CMIP6, because some atmospheric settings (e.g., ieflx_opt and initial conditions) are different for the F and coupled cases.

Compset Creation Code:

place holder for github link

Ocean Initial Condition:

• Download the files from ESGF/input4mips
  • File names:
    • SSTs: tos_input4MIPs_SSTsAndSeaIce_CMIP_PCMDI-AMIP-1-1-4_gn_187001-201712.nc (md5sum: 'f2baf16f5a40fe53d9d2429e8dd1edf4')
    • Sea ice: siconc_input4MIPs_SSTsAndSeaIce_CMIP_PCMDI-AMIP-1-1-4_gn_187001-201712.nc (md5sum: '50d1315023b11fdd011fe74f7ae37b5e')
  • Resolution: 1 degree x 1 degree, monthly
  • Version: 20180427
• The input4MIPs files start from 1870-01-01. Use the climatology of first 10 years (1870-1879) as the prescribed data for the F1850 compset
• The file is uploaded on the E3SM input data server at: https://web.lcrc.anl.gov/public/e3sm/inputdata/ocn/docn7/SSTDATA/sst_ice_CMIP6_DECK_E3SM_1x1_1850_clim_c20190125.nc
• Additional information is documented at /wiki/spaces/ATM/pages/201525378

Land Initial Condition:

• Use the same land IC file as the transient compset (F20TRC5-CMIP6) to maintain consistency between F1850 and AMIP simulations
• File name: I1850CLM45.ne30_oECv3.edison.intel.36b43c9.clm2.r.0001-01-06-00000_c20171023.nc

Atmosphere Initial Condition:

• Uses the atmospheric state at the end of DECK piControl simulation
• File name: 20180129.DECKv1b_piControl.ne30_oEC.edison.cam.i.0501-01-01-00000_c20190202.nc

Aerosol Emissions:

• Identical to A_WCYCL1850S_CMIP6

Greenhouse Gas Concentrations:

• Identical to A_WCYCL1850S_CMIP6

Land Use/Land Cover:

• Identical to A_WCYCL1850S_CMIP6

Tuning:

• Identical to A_WCYCL1850S_CMIP6