气候变化领域集成服务门户(CCPortal): Decrease in light precipitation events in Huai River Eco-economic Corridor; a climate transitional zone in eastern China

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DOI	10.1016/j.atmosres.2019.04.027
	Decrease in light precipitation events in Huai River Eco-economic Corridor; a climate transitional zone in eastern China
	Zhang Y.; Liu C.; You Q.; Chen C.; Xie W.; Ye Z.; Li X.; He Q.
发表日期	2019
ISSN	0169-8095
起始页码	240
结束页码	254
卷号	226
英文摘要	Light precipitation events generally occur much more frequently than events of other precipitation intensities. Changes in light precipitation amounts and days (length) over time have profound implications for climate change. There is a lack of quantitative monitoring indicators or in-depth analysis techniques for atmospheric circulation mechanisms of regional light precipitation events, especially in climate transitional zones. The Huai River Eco-economic Corridor (HREC) served as a case area in this study as we assessed trends in light precipitation events and their possible atmospheric circulation mechanisms. A significant decreasing trend in the light precipitation events is observed and appears to be mainly concentrated in the lower intensities (0.1 ≤ P<2 mm/day). The decreasing trend is more obvious for consecutive than discrete light precipitation events. The mutation points for annual consecutive light precipitation events were found in 1977/1978, and averages in the later years of the observation period (1978–2014) fell significantly below those of the earlier period (1961–1977). Atmospheric circulation variables corresponding to the light precipitation days with intensity of 0.1–2 mm/day revealed that the decreasing trends in water vapor transport budgets, low cloud cover, and total column cloud liquid water may be the primary causes of decreased light precipitation events. The decreasing trends in light precipitation events were also likely attributable to increases in water vapor flux divergence, air temperature, and vertical velocity values. © 2019 Elsevier B.V.
英文关键词	Atmospheric circulation; Consecutive light precipitation; Huai River Eco-economic Corridor; Light precipitation events
语种	英语
scopus关键词	Air; Atmospheric movements; Budget control; Climate change; Rivers; Water vapor; Atmospheric circulation; Cloud liquid waters; Eco-economic; Observation Period; Precipitation events; Precipitation intensity; Quantitative monitoring; Water vapor transport; Precipitation (meteorology); annual variation; atmospheric circulation; cloud cover; cloud water; precipitation intensity; transition zone; trend analysis; water vapor; China; Huai River
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162335
作者单位	School of Urban and Environmental Science, Huaiyin Normal University, Huai'an, 223300, China; Department of Atmospheric and Oceanic Sciences & Institute of Atmospheric Sciences, Fudan University, Shanghai, 200433, China; Key Laboratory of Meteorological Disaster, Ministry of Education (KLME)/Joint International Research Laboratory of Climate and Environment Change (ILCEC), Nanjing University of Information Science and Technology, Nanjing (NUIST), 210044, China; School of Geographical Sciences, NUIST210044, China
推荐引用方式 GB/T 7714	Zhang Y.,Liu C.,You Q.,et al. Decrease in light precipitation events in Huai River Eco-economic Corridor; a climate transitional zone in eastern China[J],2019,226.
APA	Zhang Y..,Liu C..,You Q..,Chen C..,Xie W..,...&He Q..(2019).Decrease in light precipitation events in Huai River Eco-economic Corridor; a climate transitional zone in eastern China.Atmospheric Research,226.
MLA	Zhang Y.,et al."Decrease in light precipitation events in Huai River Eco-economic Corridor; a climate transitional zone in eastern China".Atmospheric Research 226(2019).