Precipitation Pattern of the Mid-Holocene Simulated by a High-Resolution Regional Climate Model  

作　　者：YU Entao WANG Tao GAO Yongqi XIANG Weiling 

机构地区：[1]Nansen-Zhu International Research Centre,Institute of Atmospheric Physics, Chinese Academy of Sciences [2]Climate Change Research Center,Chinese Academy of Sciences [3]Nansen Environmental and Remote Sensing Center [4]State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry,Institute of Atmospheric Physics, Chinese Academy of Sciences

出　　处：《Advances in Atmospheric Sciences》2014年第4期962-971,共10页大气科学进展（英文版）

基　　金：supported by the "Strategic Priority Research Program" of the Chinese Academy of Sciences (Grant XDB03020602);the National Natural Science Foundation of China (Grant No. 41130103);the "Strategic Priority Research Program" of the Chinese Academy of Sciences (Grant No. XDA05120703);the "Introduction of Advanced International Forestry Science and Technology" of the State Forestry Administration (2012-4-79)

摘　　要：Early proxy-based studies suggested that there potentially occurred a ＂southern drought/northern flood＂ （SDNF） over East China in the mid-Holocene （from roughly 7000 to 5000 years before present）.In this study,we used both global and regional atmospheric circulation models to demonstrate that the SDNF-namely,the precipitation increases over North China and decreases over the the lower reaches of the Yangtze River Valley--could have taken place in the mid-Holocene.We found that the SDNF in the mid-Holocene was likely caused by the lower SST in the Pacific.The lowered SST and the higher air temperature over China's Mainland increased the land-sea thermal contrast and,as a result,strengthened the East Asian summer monsoon and enhanced the precipitation over North China.Early proxy-based studies suggested that there potentially occurred a ＂southern drought/northern flood＂ （SDNF） over East China in the mid-Holocene （from roughly 7000 to 5000 years before present）.In this study,we used both global and regional atmospheric circulation models to demonstrate that the SDNF-namely,the precipitation increases over North China and decreases over the the lower reaches of the Yangtze River Valley--could have taken place in the mid-Holocene.We found that the SDNF in the mid-Holocene was likely caused by the lower SST in the Pacific.The lowered SST and the higher air temperature over China's Mainland increased the land-sea thermal contrast and,as a result,strengthened the East Asian summer monsoon and enhanced the precipitation over North China.

关 键 词：MID-HOLOCENE East China southern drought/northern flood 

分 类 号：P426.6[天文地球—大气科学及气象学]