气候变化领域集成服务门户(CCPortal): Recent intensified influence of the winter north pacific sea surface temperature on the Mei-Yu withdrawal date

CCPortal

DOI	10.1175/JCLI-D-19-0768.1
	Recent intensified influence of the winter north pacific sea surface temperature on the Mei-Yu withdrawal date
	Li H.; He S.; Fan K.; Liu Y.; Yuan X.
发表日期	2021
ISSN	08948755
起始页码	3869
结束页码	3887
卷号	34 期号:10
英文摘要	The mei-yu withdrawal date (MWD) is a crucial indicator of flood/drought conditions over East Asia. It is characterized by a strong interannual variability, but its underlying mechanism remains unknown. We investigated the possible effects of the winter sea surface temperature (SST) in the North Pacific Ocean on the MWD on interannual to interdecadal time scales. Both our observations and model results suggest that the winter SST anomalies associated with the MWD are mainly contributed to by a combination of the first two leading modes of the winter SST in the North Pacific, which have a horseshoe shape (the NPSST). The statistical results indicate that the intimate linkage between the NPSST and the MWD has intensified since the early 1990s. During the time period 1990–2016, the NPSST-related SST anomalies persisted from winter to the following seasons and affected the SST over the tropical Pacific in July. Subsequently, the SST anomalies throughout the North Pacific strengthened the southward migration of the East Asian jet stream (EAJS) and the southward and westward displacement of the western North Pacific subtropical high (WPSH), leading to an increase in mei-yu rainfall from 1 to 20 July. More convincingly, the anomalous EAJS and WPSH induced by the SST anomalies can be reproduced well by numerical simulations. By contrast, the influence of the NPSST on the EASJ and WPSH were not clear between 1961 and 1985. This study further illustrates that the enhanced interannual variability of the NPSST may be attributed to the more persistent SST anomalies during the time period 1990–2016. Ó 2021 American Meteorological Society. For information regarding reuse of this content and general copyright information, consult the AMS Copyright Policy
英文关键词	Air-sea interaction; Climate models; Climate variability; Mei-yu fronts; Monsoons; Precipitation
语种	英语
scopus关键词	Atmospheric temperature; Submarine geophysics; Surface properties; Surface waters; Tropics; American meteorological societies; Copyright informations; East asian jet streams; Interannual variability; North Pacific; North Pacific Ocean; Sea surface temperature (SST); Western North Pacific; Oceanography; Indicator indicator
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178579
作者单位	Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Key Laboratory of Meteorological Disaster, Ministry of Education, Joint International Research Laboratory of Climate and Environment Change, Nanjing University of Information Science and Technology, Nanjing, China; Nansen-Zhu International Research Centre, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; School of Hydrology and Water Resources, Nanjing University of Information Science and Technology, Nanjing, China; Geophysical Institute, University of Bergen, Bjerknes Centre for Climate Research, Bergen, Norway; School of Atmospheric Sciences, Guangdong Province Key Laboratory for Climate Change and Natural Disasters Studies, Sun Yat-sen University, Guangzhou, China; Southern Laboratory of Ocean Science and Engineering (Zhuhai), Zhuhai, China
推荐引用方式 GB/T 7714	Li H.,He S.,Fan K.,et al. Recent intensified influence of the winter north pacific sea surface temperature on the Mei-Yu withdrawal date[J],2021,34(10).
APA	Li H.,He S.,Fan K.,Liu Y.,&Yuan X..(2021).Recent intensified influence of the winter north pacific sea surface temperature on the Mei-Yu withdrawal date.Journal of Climate,34(10).
MLA	Li H.,et al."Recent intensified influence of the winter north pacific sea surface temperature on the Mei-Yu withdrawal date".Journal of Climate 34.10(2021).