LASG Coupled Climate System Model FGCM‐1.0

• Published in: Chinese Journal of Geophysics
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 2007
• Subjects: Indian; Sea ice
• Online Access: http://dx.doi.org/10.1002/cjg2.1165; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fcjg2.1165; https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1002/cjg2.1165

Abstract The latest version of a coupled climate system model developed at the State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG) and its basic performance are described in this study. The coupled model is configured based on the initial version of LASG flexible coupled GCM (FGCM‐0), and it is the second version of FGCM and named as FGCM‐1.0. FGCM‐1.0 includes three component models—atmosphere, ocean and sea ice models coupled together with the NCAR flux coupler, in which the oceanic component model of FGCM‐1.0 is a global eddy‐permitting oceanic general circulation model developed at LASG, and both the atmospheric and sea ice models are the NCAR atmosphere model CAM2 and CISM4, respectively. Momentum, heat and fresh water fluxes are exchanged at the air‐sea interface in the coupled model, although there is not any artificial flux correction or flux anomaly coupling scheme used in the coupled model, the model reproduces basic climatological state. Further analysis based on a long term integration of the coupled model suggest that it can simulate basic behavior of El Niño‐Southern Oscillation (ENSO) and Indian Ocean Dipole (IOD); compared with the initial version of FGCM (FGCM‐0), FGCM‐1.0 simulate a more realistic North Equatorial Counter Current (NECC) and ENSO cycle.