气候变化领域集成服务门户(CCPortal): Annually Resolved Monsoon Onset and Withdrawal Dates Across the Himalayas Derived From Local Precipitation Statistics

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DOI	10.1029/2020GL088420
	Annually Resolved Monsoon Onset and Withdrawal Dates Across the Himalayas Derived From Local Precipitation Statistics
	Brunello C.F.; Andermann C.; Marc O.; Schneider K.A.; Comiti F.; Achleitner S.; Hovius N.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:23
英文摘要	A local and flexible definition of the monsoon season based on hydrological evidence is important for the understanding and management of Himalayan water resources. Here, we present an objective statistical method to retrieve seasonal hydrometeorological transitions. Applied to daily rainfall data (1951–2015), this method shows an average longitudinal delay of ~15 days, with later monsoon onset and earlier withdrawal in the western Himalaya, consistent with the continental progression of wet air masses. This delay leads to seasons of different length along the Himalaya and biased precipitation amounts when using uniform calendric monsoon boundaries. In the Central Himalaya annual precipitation has increased, due primarily to an increase of premonsoon precipitation. These findings highlight issues associated with a static definition of monsoon boundaries and call for a deeper understanding of nonmonsoonal precipitation over the Himalayan water tower. ©2020 The Authors.
英文关键词	Water resources; Water towers; Annual precipitation; Daily rainfall; Flexible definition; Himalayas; Monsoon onset; Monsoon season; Pre-monsoon; Wet air; Atmospheric thermodynamics; annual variation; hydrometeorology; moisture content; monsoon; rainfall; seasonality; wetting; Himalayas
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/169350
作者单位	Helmholtz Centre Potsdam, German Research Centre for Geosciences, Potsdam, Germany; Faculty of Science and Technology, Free University of Bozen-Bolzano, Bozen-Bolzano, Italy; Géosciences Environnement Toulouse (GET), UMR 5563, CNRS/IRD/UPS/CNES, Observatoire Midi-Pyrénées, Toulouse, France; Geological Institute, ETH Swiss Federal Institute of Technology Zurich, Zurich, Switzerland; Department of Hydraulic Engineering, Institute for Infrastructure, University of Innsbruck, Innsbruck, Austria; Institute of Earth and Environmental Science, University of Potsdam, Potsdam-Golm, Germany
推荐引用方式 GB/T 7714	Brunello C.F.,Andermann C.,Marc O.,et al. Annually Resolved Monsoon Onset and Withdrawal Dates Across the Himalayas Derived From Local Precipitation Statistics[J],2020,47(23).
APA	Brunello C.F..,Andermann C..,Marc O..,Schneider K.A..,Comiti F..,...&Hovius N..(2020).Annually Resolved Monsoon Onset and Withdrawal Dates Across the Himalayas Derived From Local Precipitation Statistics.Geophysical Research Letters,47(23).
MLA	Brunello C.F.,et al."Annually Resolved Monsoon Onset and Withdrawal Dates Across the Himalayas Derived From Local Precipitation Statistics".Geophysical Research Letters 47.23(2020).