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ICDC
CENIntegrated Climate Data Center ICDC

Photo: getty images/L. Calvetti

MRI-ESM2

The MRI-ESM2 model (Yukimoto et al., 2019) uses version 3.5 of the MRI-AGCM atmosphere/land model at TL159 (approximately 120 km) horizontal resolution with 80 vertical levels. The ocean and sea ice are modelled using version 4.4 of the Meteorological Research Institute Community Ocean Model (MRI.COM; Tsujino et al., 2017) using a resolution of 1∘ zonally and 0.3–0.5∘ meridionally and a tri-polar grid north of 64∘ N with a 30–50 km resolution in the Arctic Ocean.

The sea ice model component uses a prognostic ITD with five thickness categories and uses the elastic–viscous–plastic rheology of Hunke and Dukowicz (1997). Sea ice thermodynamics are performed following Mellor and Kantha (1989) using one layer of ice and a zero-layer snow scheme. Radiation is performed using the “default” CICE CCSM3 described in Hunke et al. (2015). Lateral melting is not modelled in MRI-COMv4 and so lateral melting is considered part of basal melting. In addition, ice creation from the supercooled water within a grid is all counted as basal growth, whereas frazil ice growth is not defined.

Institution: Meteorological Research Institute (MRI), Tsukuba, Ibaraki, Japan
Model: Meteorological Research Institute - Earth System Model version 2 (MRI-ESM2)
Resolution: aerosol: 250 km, atmos: 100 km, atmosChem: 250 km, land: 100 km, ocean: 100 km, ocnBgchem: 100 km, seaIce: 100 km
Components: aerosol: MASINGAR mk2r4 (TL95; 192 x 96 longitude/latitude; 80 levels; top level 0.01 hPa), atmos: MRI-AGCM3.5 (TL159; 320 x 160 longitude/latitude; 80 levels; top level 0.01 hPa), atmosChem: MRI-CCM2.1 (T42; 128 x 64 longitude/latitude; 80 levels; top level 0.01 hPa), land: HAL 1.0, ocean: MRI.COM4.4 (tripolar primarily 0.5 deg latitude/1 deg longitude with meridional refinement down to 0.3 deg within 10 degrees north and south of the equator; 360 x 364 longitude/latitude; 61 levels; top grid cell 0-2 m), ocnBgchem: MRI.COM4.4, seaIce: MRI.COM4.4
Contact: Seiji Yukimoto, email: yukimoto (at) mir-jma.go.jp
References: Yukimoto, S., et al., The Meteorological Research Institute Earth System Model version 2.0, MRI-ESM2.0: Description and basic evaluation of the physical component, J. Meteorol. Soc. Jpn., 97, 931–965, 2019, https://doi.org/10.2151/jmsj.2019-051
Information: https://cera-www.dkrz.de/WDCC/ui/cerasearch/cmip6?input=CMIP6.CMIP.MRI.MRI-ESM2-0