Design for the LGM run

Associated publication

Kageyama et al, in prep

Specifications

PMIP4-CMIP6 specifications
PMIP4-CMIP6 name	midHolocene
Astronomical parameters	eccentricity = obliquity = ° perihelion-180° = ° Date of vernal equinox : March 21 at noon
Trace gases	CO2 = 190 ppm CH4 = 375 ppb N2O = 200 ppb CFC = 0 O3 = same as in CMIP6 piControl
Solar activity	Same as in CMIP6 piControl
Ice sheets	Modified Access to data
Topography and coastlines	Modified Access to data
Volcanic activity	Same as in CMIP6 piControl
Aerosols	Modified sources, atmospheric concentrations or radiative forcing, depending on model complexity and model configuration used for DECK and historical experiments cf. documenting papers: Kageyama et al, in prep and Kageyama et al, subm. Access to data
Vegetation	Depending on model complexity and model configuration used for DECK and historical experiments: Interactive vegetation or Interactive carbon cycle (LAI) or Prescribed to present-day values or mid-Holocene values computed from off-line vegetation model The methodology to represent vegetation should be the same as for the CMIP6 piControl simulation cf. documenting papers: Kageyama et al, in prep and Kageyama et al, subm.