气候变化领域集成服务门户(CCPortal): Diametrically Opposite Scaling of Extreme Precipitation and Streamflow to Temperature in South and Central Asia

CCPortal

DOI	10.1029/2020GL089386
	Diametrically Opposite Scaling of Extreme Precipitation and Streamflow to Temperature in South and Central Asia
	Ghausi S.A.; Ghosh S.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:17
英文摘要	Clausius-Clapeyron (CC) equation suggests a 6–7% increase in extreme precipitation per degree rise in temperature. Scaling rates of extreme precipitation with temperature at different regions significantly deviate from the CC rate. We find that the daily extreme precipitation scaling is negative over sites in the warmer tropical region of South Asia, as opposed to positive scaling over the cooler subtropics. Daily precipitation scaling tends to break down and becomes negative above a temperature of 23–24°C in all the regions. However, such breakdown disappears for subdaily precipitation extremes, and they continue to increase at high temperatures over both tropics and subtropics. This leads to high positive streamflow-temperature scaling over small catchments, in contrast to extreme precipitation scaling at a daily scale, which is partly negative. Our analysis highlights an increased threat due to flash flood in a warmer climate, which cannot be fully estimated with the analysis of daily precipitation extremes. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Catchments; Stream flow; Tropics; Daily precipitations; Extreme precipitation; High temperature; Precipitation extremes; Scaling rates; Small catchment; Temperature scaling; Tropical regions; Precipitation (meteorology); air temperature; extreme event; flash flood; high temperature; precipitation (climatology); streamflow; subtropical region; tropical region; Central Asia; South Asia
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169780
作者单位	Department of Civil Engineering, Indian Institute of Technology Bombay, Mumbai, India; Interdisciplinary Programme in Climate Studies, Indian Institute of Technology Bombay, Mumbai, India
推荐引用方式 GB/T 7714	Ghausi S.A.,Ghosh S.. Diametrically Opposite Scaling of Extreme Precipitation and Streamflow to Temperature in South and Central Asia[J],2020,47(17).
APA	Ghausi S.A.,&Ghosh S..(2020).Diametrically Opposite Scaling of Extreme Precipitation and Streamflow to Temperature in South and Central Asia.Geophysical Research Letters,47(17).
MLA	Ghausi S.A.,et al."Diametrically Opposite Scaling of Extreme Precipitation and Streamflow to Temperature in South and Central Asia".Geophysical Research Letters 47.17(2020).