Roles of tropical Indian-Pacific oceans SSTs in the interdecadal variability of East Asian summer monsoon: A modeling study

摘要：

This study investigates the roles of tropical IndianPacific oceans SSTs in the interdecadal variability of East Asian Summer Monsoon (EASM) during the second half of the twentieth century based on simulations from an atmospheric general circulation model, NCAR CAM3 (Community Atmospheric Model). These simulations are conducted by the observed 1950-2000 monthly SSTs in the tropical Indian-Pacific oceans, tropical Indian Ocean and tropical Pacific, independently. Results show that CAM3 is able to simulate the observed interdecadal weakening of EASM occurred in the mid-late 1970s when SSTs in tropical IndianPacific Oceans and tropical Pacific SSTs are determined, but to simulate the interdecadal strengthening of EASM when SSTs in the tropical Indian Ocean are determined. These results indicate that SST anomaly in the tropical Pacific plays a central role in the interdecadal weakening of EASM occurred in the mid-late of 1970s, while SST anomaly in the tropical Indian Ocean plays a converse role in it. As a background, the interdecadal variation of tropical Pacific SSTs has an important effect upon the interdecadal weakening of EASM.

关键词： East Asian summer monsoon interdecadal variability sea surface temperature tropical Indian Ocean tropical Pacific numerical simulation

作者: Zeng Gang Yu Ying Zhou Guobing Li Chunhui

作者单位: Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Informatio Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Informatio Chongqing Meteorological Administration, Chongqing, 401147, China Institute of Tropical and Marine Meteorology, China Meteorological Administration, Guangzhou, 510080

会议类型: 国际会议

会议名称: 2010 International Conference on Digital Manufacturing and Automation(2010 数字制造与自动化国际会议 ICDMA 2010)

会议地点: 长沙

会议语种:英文

页码: 329-332

在线出版日期: 2010-12-18（万方平台首次上网日期，不代表论文的发表时间）