Differences between CMIP6 and CMIP5 Models in Simulating Climate over China and the East Asian Monsoon,Advances in Atmospheric Sciences

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Differences between CMIP6 and CMIP5 Models in Simulating Climate over China and the East Asian Monsoon
Advances in Atmospheric Sciences ( IF 6.5 ) Pub Date : 2020-08-17 , DOI: 10.1007/s00376-020-2034-y
Dabang Jiang , Dan Hu , Zhiping Tian , Xianmei Lang

We compare the ability of coupled global climate models from the phases 5 and 6 of the Coupled Model Intercomparison Project (CMIP5 and CMIP6, respectively) in simulating the temperature and precipitation climatology and interannual variability over China for the period 1961\2-2005 and the climatological East Asian monsoon for the period 1979–2005. All 92 models are able to simulate the geographical distribution of the above variables reasonably well. Compared with earlier CMIP5 models, current CMIP6 models have nationally weaker cold biases, a similar nationwide overestimation of precipitation and a weaker underestimation of the southeast\3-northwest precipitation gradient, a comparable overestimation of the spatial variability of the interannual variability, and a similar underestimation of the strength of winter monsoon over northern Asia. Pairwise comparison indicates that models have improved from CMIP5 to CMIP6 for climatological temperature and precipitation and winter monsoon but display little improvement for the interannual temperature and precipitation variability and summer monsoon. The ability of models relates to their horizontal resolutions in certain aspects. Both the multi-model arithmetic mean and median display similar skills and outperform most of the individual models in all considered aspects.

更新日期：2020-08-17

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