气候变化领域集成服务门户(CCPortal): Vertical structure and microphysical observations of winter precipitation in an inner valley during the Cerdanya-2017 field campaign

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DOI	10.1016/j.atmosres.2021.105826
	Vertical structure and microphysical observations of winter precipitation in an inner valley during the Cerdanya-2017 field campaign
	González S.; Bech J.; Garcia-Benadí A.; Udina M.; Codina B.; Trapero L.; Paci A.; Georgis J.-F.
发表日期	2021
ISSN	0169-8095
卷号	264
英文摘要	Precipitation processes at windward and leeward sides of the mountains have been object of study for many decades. Instead, inner mountain valleys, where usually most mountain population lives, have received considerably less attention. This article examines precipitation processes during a winter field campaign in an inner valley of the Pyrenees (NE Spain) using, among other instruments, a K-band vertically pointing Doppler radar (Micro Rain Radar) and a laser-based optical disdrometer (Parsivel). A decoupling is found between the stalled air of the valley and the air of the free atmosphere above the mountain crest level, evidenced by an increase of turbulence and spectral width of precipitation particles. Wind shear layer may promote riming and aggregation of the ice and snow particles. Two main rainfall regimes are found during the campaign: (1) stratiform rainfall mostly produced by water vapour deposition processes, although sometimes riming and aggregation become important, and (2) weak convection with slight dominance of collision-coalescence processes. Precipitation characteristics at the bottom of the valley show typical continental features such as low Liquid Water Content, despite the valley is only about 100 km from the sea. This study demonstrates that inner valley may present distinct precipitation features with respect to windward and leeward precipitation. © 2021 The Authors
英文关键词	Cerdanya-2017; Inner valley; Micro Rain Radar; Microphysical processes; Mountain precipitation; Parsivel disdrometer; Pyrenees
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/236576
作者单位	DT Catalonia, Agencia Estatal de Meteorología (AEMET), Barcelona, Spain; Department of Applied Physics - Meteorology, University of Barcelona, Barcelona, Spain; SARTI, Universitat Politècnica de Catalunya, Vilanova i la Geltrú, Spain; Snow and Mountain Research Center of Andorra (CENMA-IEA), Andorra Research Institute, Andorra; Centre National de Recherches Météorologiques (CNRM), Université de Toulouse, METEO-FRANCE, CNRS, Toulouse, France; Laboratoire d'Aérologie, Université de Toulouse, CNRS, Toulouse, France
推荐引用方式 GB/T 7714	González S.,Bech J.,Garcia-Benadí A.,et al. Vertical structure and microphysical observations of winter precipitation in an inner valley during the Cerdanya-2017 field campaign[J],2021,264.
APA	González S..,Bech J..,Garcia-Benadí A..,Udina M..,Codina B..,...&Georgis J.-F..(2021).Vertical structure and microphysical observations of winter precipitation in an inner valley during the Cerdanya-2017 field campaign.Atmospheric Research,264.
MLA	González S.,et al."Vertical structure and microphysical observations of winter precipitation in an inner valley during the Cerdanya-2017 field campaign".Atmospheric Research 264(2021).