Climate Change Research ›› 2016, Vol. 12 ›› Issue (4): 294-302.doi: 10.12006/j.issn.1673-1719.2015.196

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Hindcast of China Climate With Decadal Experiment by BCC-CSM1.1 Climate Model

Wei Linxiao1, Xin Xiaoge2, Cheng Bingyan1, Wu Tongwen2, Guo Qu1, Li Yonghua1   

  1. 1 Chongqing Climate Center, Chongqing 401147, China;
    2 National Climate Center, China Meteorological Administration, Beijing 100081, China
  • Received:2015-11-13 Revised:2016-01-25 Online:2016-07-30 Published:2016-07-30
  • Contact: Xin Xiaoge


Simulations of China climate and its decadal changes are compared between Historical experiment and Decadal experiment of Beijing Climate System Model version 1.1 (BCC_CSM1.1) submitted to CMIP5. Results show that the climatological distribution of the precipitation in China is better simulated by the Decadal experiment. The error of decadal anoamlies in China simulated by the Decadal experiment is less than the Historical experiment. As for the decadal change of the East China precipitation in the late of the 1970s, the Decadal experiment can simulate the increased precipitation in the Yangtze River basin, while the Historical experiment produce the opposite feature with the observation. The main difference between Decadal experiment and Historical experiment is that the first one initializes the observed sea surface temperature. In order to discuss the importance of simulated sea surface temperature (SST) by the coupled climate model, the Nudging experiment (the modeled SST is nudged to the observed SST during the simulation) and the Decadal experiment were compared. It is found that the Nudging experiment can significantly simulate the “North drought and South Flood” feature in East China. Moreover, it can reproduce the stronger and southward movement of the East Asian jet stream. Those comparisons indicate that the hindcast of the SST by coupled models may have important influence on model’s capability in prediction of East Asian climate and its decadal changes.

Key words: BCC_CSM1.1, coupled model, decadal, precipitation, hindcast

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