Climate Change Research ›› 2021, Vol. 17 ›› Issue (6): 730-743.doi: 10.12006/j.issn.1673-1719.2021.005

• Changes in Climate System • Previous Articles     Next Articles

Evaluation on the performance of CMIP6 global climate models with different horizontal resolution in simulating the precipitation over China

HU Yi-Yang1,2(), XU Ying2(), LI Jin-Jian1, HAN Zhen-Yu2   

  1. 1 Chengdu University of Information Technology, Chengdu 610225, China
    2 Laboratory for Climate Studies, China Meteorological Administration, Beijing 100081, China
  • Received:2021-01-06 Revised:2021-03-10 Online:2021-11-30 Published:2021-11-26
  • Contact: XU Ying;


Based on the 18 global climate models with different horizontal resolutions from the High Resolution Model Intercomparison Project (HighResMIP) of CMIP6, precipitation over China in the period of 1961-2014 was compared against the observation of CN05.1. Results show that all of the models can reproduce the spatial pattern of mean annual precipitation and the seasonal variation of dry winter and wet summer over China. Compared with the model with low-resolution, the high-resolution model can significantly improve the spatial distribution of precipitation, and the bias in the Tibetan Plateau, North China and South China is significantly reduced. The annual cycle of precipitation is also better simulated by the high-resolution compared to the low-resolution models, with lower bias in January, from September to December, and the annual precipitation. In addition, for the first and second leading modes of interannual and interdecadal, most of the low- and high-resolution models fail to simulate the first mode of interdecadal scale. But for the second mode of interdecadal, the first and second mode of interannual, the performance of about half models are improved with the increase of horizontal resolution.

Key words: HighResMIP, High-resolution, Precipitation, Evaluation

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