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首页»科研成果» 2014
李建平与合作者在ENVIRONMENTAL RESEARCH LETTERS上发表论文
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A dipole pattern in the Indian and Pacific oceans and its relationship with the East Asian summer monsoon Jiayu Zheng1,3, Jianping Li2 and Juan Feng1,2 1 State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, People’s Republic of China 2 College of Global Change and Earth System Sciences, Beijing Normal University, Beijing, People’s Republic of China 3 University of Chinese Academy of Sciences, Beijing, People’s Republic of China ABSTRACT This study demonstrates a robust relationship between the Indo-Pacific warm pool (IPWP) and North Pacific Ocean dipole (IPOD) and the East Asian summer monsoon (EASM) using observational datasets and sensitivity tests from the Community Atmosphere Model version 3.1 of the National Center for Atmospheric Research. The IPOD, which is a significant pattern of boreal summer SSTA in the Indian and Pacific oceans characterized by positive (negative) sea-surface temperature anomalies (SSTA) in the North Pacific and negative (positive) SSTA in the IPWP, appears around May, intensifies in the following months, and weakens in September. In summers with a positive IPOD phase, the western Pacific subtropical high (WPSH) weakens and shrinks with the axis of the WPSH ridge moving northwards, which favours an intensified EASM and a decrease in summer rainfall in the Yangtze River valley, and vice versa. KEY WORDS: Indo-Pacific warm pool and North Pacific Ocean dipole (IPOD), East Asian summer monsoon (EASM), western Pacific subtropical high PUBLISHED BY: Environ. Res. Lett., 2014, 9, online, DOI: 10.1088/1748-9326/9/7/074006 SOURCE: http://iopscience.iop.org/1748-9326/9/7/074006/article?fromSearchPage=true |
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