气候变化领域集成服务门户(CCPortal): Heat Wave Variations Across China Tied to Global SST Modes

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DOI	10.1029/2019JD031612
	Heat Wave Variations Across China Tied to Global SST Modes
	Wei J.; Wang W.; Shao Q.; Yu Z.; Chen Z.; Huang Y.; Xing W.
发表日期	2020
ISSN	2169897X
卷号	125 期号:6
英文摘要	Progressive intensification and proliferation of heat waves impose extensively impacts on entire environment and ecology. The far-reaching implications of heat waves and the severe future projections emphasize the imperative need to explore the driving factors and their quantitative contribution to heat wave variations. In this study, a multiaspect characteristic of heat waves across China during 1961–2017 is evaluated using excess heat factor. Results showed that the number of events, frequency, duration, and intensity has heterogeneous spatial patterns, with a consistent abrupt transition in 1996–1997. The robust positive correlations between heat wave characteristics and warming sea surface temperature (SST) indicate the association of heat wave with SST anomalies. Except the number of events, the other factors (including the frequency, duration, and intensity) of heat waves are strongly influenced by El Niño-Southern Oscillation (ENSO) and Indian Ocean Dipole (IOD). However, the influences have significant variations from region to region, with the central regions experiencing significant decreases in the frequency, duration, and intensity of heat waves during the simultaneous ENSO phases (El Niño-La Niña), in comparison with northern and western regions dominated by IOD (positive-negative) experiencing longer and more frequent heat waves. Particularly, the mild heat waves are more vulnerable to the warming SST modes than severe heat waves. The decrease of heat waves is affected by the convergent winds bringing cold air from the high latitude, while the extensively significant increase of heat waves is controlled by the anomalously sinking motions. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	ENSO; excess heat factor; Heatwave; IOD
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186088
作者单位	State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, China; College of Hydrology and Water Resources, Hohai University, Nanjing, China; CSIRO Data 61, Australian Resources Research Centre, Bentley, WA, Australia
推荐引用方式 GB/T 7714	Wei J.,Wang W.,Shao Q.,et al. Heat Wave Variations Across China Tied to Global SST Modes[J],2020,125(6).
APA	Wei J..,Wang W..,Shao Q..,Yu Z..,Chen Z..,...&Xing W..(2020).Heat Wave Variations Across China Tied to Global SST Modes.Journal of Geophysical Research: Atmospheres,125(6).
MLA	Wei J.,et al."Heat Wave Variations Across China Tied to Global SST Modes".Journal of Geophysical Research: Atmospheres 125.6(2020).