A Global/Regional Integrated Model System‐Chemistry Climate Model: 1. Simulation Characteristics

• Published in: Earth and Space Science
• Main Authors: Yong‐Cheol Jeong, Sang‐Wook Yeh, Seungun Lee, Rokjin J. Park
• Format: Article in Journal/Newspaper
• Language: English
• Published: American Geophysical Union (AGU) 2019
• Subjects: GRIMS‐CCM; Simulation; Regional biases; Astronomy; QB1-991; Geology; QE1-996.5; Antarctic; The Antarctic; Antarc*; Sea ice
• Online Access: https://doi.org/10.1029/2019EA000727; https://doaj.org/article/6796c48c276849dfaad17f79f7f1adce

Abstract This study describes the simulation characteristics of a newly developed Global/Regional Integrated Model system‐Chemistry Climate Model (GRIMs‐CCM), which is listed in Chemistry Climate Model Initiative as a participating model. The GRIMs‐CCM was run using a standard set of forcings, and historical sea surface temperatures and sea ice concentration from the Hadley Centre were prescribed. The simulation results of GRIMs‐CCM were compared to the National Center for Environmental Prediction/National Center for Atmospheric Research (NCEP/NCAR) reanalysis data set 1. The GRIMs‐CCM satisfactorily simulated the climatological (1960–2010) atmospheric features and atmospheric teleconnections resulting from tropical sea surface temperature forcing. However, the GRIMs‐CCM also had some regional biases; for instance, particularly, the temperature bias over the Antarctic was noticeable. We further analyzed physical processes that caused such biases and the influence of coupled chemistry‐climate processes in the GRIMs‐CCM, which may provide further guidance to improve an earlier version of the GRIMs‐CCM and other climate‐chemistry models participating in the Chemistry Climate Model Initiative.