- 责任者：Wu Pengfei (Key Laboratory of Meteorological Disaster ; Ministry of Education ; Nanjing University of Information Science and Technology ; Nanjing 210044 ; China) ; Liu Zhengyu
- 刊名：Quaternary Sciences
- 出版年：2013
- 卷期：33(6)
- 关键词：全新世 ; Holocene ; 大气降水 ; atmospheric precipitation ; 东亚 ; Eastern Asia
- 页码：p.1138-1147
- 图表：6 illus., 50 refs.
- 分类号：1400
- issnNo：ISSN1001-7410
- isbnNo：CN11-2708/P
Basing on a transient simulation of the past 6000 years using a fast ocean-atmosphere coupled model（FOAM） driven by orbital forcing（ the boundary condition for the simulation is set to the present time and the greenhouse- gases value is set to the concentrations preindustrial level）, the work studied the features of spatio-temporal variation of East Asian summer precipitation since the Mid-Holocene. It is found that spatio-temporal response of East Asian summer precipitation to solar radiation is significantly inconsistent since the Mid-Holocene. The North has less precipitation in the Mid-Holocene than the present while the south has more,with about 30°N as the boundary line. Since the Mid-Holocene,the summer precipitation increased in the north and decreased in the south, showing an anti-phase pattern and keeping a trend of inverse evolution to the present. Compared with area-mean behavior of precipitation, the local summer precipitation tends to show a diversified trend and the maximum precipitation in each grid appeared difference in time since the Mid-Holocene. The maximum precipitation time changes from 6kaB. P. gradient to 0kaB. P. from south to north in China and from southern Mongolia to the southwest,advancing respectively to the north and northeast China. These asynchronous characteristic of the climate is similar to that of the Holocene Optimum shown by some geological data. The characteristic of East Asian summer precipitation may result from a orbital forced South Asian and North-East Asian summer monsoons （ISM-NEASM） teleconnection in the Mid-Holocene. The latter leads to the anti-phase change in pressure and summer precipitation on both side of the latitude of 30°N in Eastern China.