Abstract
Based on the National Center for Atmospheric Research (NCAR) Climate System Model version 1 (CSM-1), a Flexible coupled General Circulation Model version 0 (FGCM-0) is developed in this study through replacing CSM-1’s oceanic component model with IAP L30T63 global oceanic general circulation model and some necessary modifications of the other component models. After the coupled model FGCM-0 is spun up for dozens of years, it has been run for 60 years without flux correction. The model does not only show the reasonable long-term mean climatology, but also reproduce a lot of features of the interannual variability of climate, e.g. the ENSO-like events in the tropical Pacific Ocean and the dipole mode pattern in the tropical Indian Ocean. Comparing FGCM-0 with the NCAR CSM-1, some common features are found, e.g. the overestimation of sea ice in the North Pacific and the simulated double ITCZ etc. The further analyses suggest that they may be attributed to errors in the atmospheric model.
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This study is jointly supported by Chinese Academy of Sciences under Grant “ Hundred Talents” for “ Validation of Coupled Climate Model”, Chinese Academy of Sciences (CAS) “ Innovation Programme” under Grant ZKCX2-SW-210 and NSFC under Grant No. 49823002.
The authors wish to thank Prof. Wang Bin for the helpful discussion in the simulation of the Indian Ocean dipole pattern. The extended integration of FGC’M-0 would not have been finished without the help from the computer center of China Academy of Meteorological Sciences. We wish to thank Mr. Meng Nianqing for helping us tune the paralleling FGCM-0 codes.
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Yongqiang, Y., Rucong, Y., Xuehong, Z. et al. A flexible coupled ocean-atmosphere general circulation model. Adv. Atmos. Sci. 19, 169–190 (2002). https://doi.org/10.1007/s00376-002-0042-8
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DOI: https://doi.org/10.1007/s00376-002-0042-8