气候变化领域集成服务门户(CCPortal): Non-uniform changes in different categories of precipitation intensity across China and the associated large-scale circulations

CCPortal

DOI	10.1088/1748-9326/aaf306
	Non-uniform changes in different categories of precipitation intensity across China and the associated large-scale circulations
	Miao C.; Duan Q.; Sun Q.; Lei X.; Li H.
发表日期	2019
ISSN	17489318
卷号	14 期号:2
英文摘要	This study focuses on changing trends in precipitation across mainland China during the period 1957-2014. We explore the influence of the El Nino-Southern Oscillation (ENSO), the Pacific Decadal Oscillation (PDO), and related large-scale atmospheric circulation variables on the changes in precipitation. The number of wet days showed statistically significant downward trends in North China, Jianghuai, South China, and Southwest of China, but upward trends on the Tibetan Plateau and in Northwest China. However, the number of very wet days increased in Jianghuai, South China and regions in Southwest China, and there was an increase in the spatial variability of a number of rainfall extremes over China. Because the changes in the frequency of wet days and very wet days were non-uniform, an increasing percentage of the total annual precipitation was derived from extreme events over large regions of mainland China. The ENSO and the PDO had a zonal influence on precipitation variability through the modulation of large-scale atmospheric circulation. Both the number of wet days and the frequency of extreme precipitation increased in southern Jianghuai and South China in El Nino years compared with La Nina years. A decrease (increase) in the number of wet days was observed in northern China (southeastern China) during positive PDO-phase years, which was likely a response to the large decrease in Southerly winds. © 2019 The Author(s). Published by IOP Publishing Ltd.
英文关键词	China; large-scale circulation; non-uniform changes; precipitation
语种	英语
scopus关键词	Atmospheric pressure; Precipitation (chemical); Precipitation (meteorology); Atmospheric circulation; China; El Nino southern oscillation; Large-scale circulation; Non-uniform; Pacific decadal oscillation; Precipitation intensity; Precipitation variability; Climatology; atmospheric circulation; El Nino-Southern Oscillation; La Nina; Pacific Decadal Oscillation; precipitation (climatology); precipitation intensity; wet season; wind direction; wind-driven circulation; Anhui; China; Jianghuai; Qinghai-Xizang Plateau
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154706
作者单位	State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing, 100875, China; State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing, 100038, China; Key Laboratory of Agricultural Non-point Source Pollution Control, Ministry of Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
推荐引用方式 GB/T 7714	Miao C.,Duan Q.,Sun Q.,et al. Non-uniform changes in different categories of precipitation intensity across China and the associated large-scale circulations[J],2019,14(2).
APA	Miao C.,Duan Q.,Sun Q.,Lei X.,&Li H..(2019).Non-uniform changes in different categories of precipitation intensity across China and the associated large-scale circulations.Environmental Research Letters,14(2).
MLA	Miao C.,et al."Non-uniform changes in different categories of precipitation intensity across China and the associated large-scale circulations".Environmental Research Letters 14.2(2019).