Daily precipitation data simulated byhigh-resolution version of MIROC（MIROC_Hires， Model for Interdisciplinary Research On Climate) is used to analyze changes in different-classprecipitation characteristics over eastern China under global warming.The results show that the MIROCmodel can well reproducenot only the spatial distribution but also the seasonal changes of precipitationover eastern Chinain 1971-2000. Since in the whole eastern China, the precipitation intensity differs much from south to north, characteristics of precipitation in South China, Yangtze-Huaihe Basin, North China and Northeast China are analyzed, respectively. Comparing with the quantityand frequency of different-class precipitation between the period of 1971-2000 and 2071-2100, there are siginficant changesin the four regions. In South China, increase in frequencies of non-precipitationand heavy (≥24 mm·d-1) rainfall days is significant, up to 13.8 d·a-1 and 4.2 d·a-1, respectively, and those of relatively weak (1~12 mm·d-1) rainfall days decrease. In Yantze-Huaihe Basin, the mean annual precipitation averaged over the region increases while frequencies of heavy rainfall days increase by 3.6 d·a-1 and those of relatively weak rainfall days decrease. In North China, the increase of mean annual precipitation is the most significant in the four regions, up to 30.5%, while frequencies of non-precipitation increase. In Northeast China, though the rainfall intensity in present days is not so much as in the other three regions, the frequencies of rainfall days increase either. As the rainfall intensity increases in the four regions, events of the extreme rainfall days are supposed to increase.
Key words
Eastern China /
Amount of different- /
Frequency of differe /
Coupled model /
Global warming
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