干旱区生态环境知识资源中心(Arid): Orographic Flow Influence on Precipitation During an Atmospheric River Event at Davis, Antarctica

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DOI	10.1029/2021JD035210
	Orographic Flow Influence on Precipitation During an Atmospheric River Event at Davis, Antarctica
	Gehring, Josue; Vignon, Etienne; Billault-Roux, Anne-Claire; Ferrone, Alfonso; Protat, Alain; Alexander, Simon P.; Berne, Alexis
通讯作者	Berne, A (corresponding author)，Ecole Polytech Fed Lausanne EPFL, Environm Remote Sensing Lab LTE, Lausanne, Switzerland.
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN	2169-897X
EISSN	2169-8996
出版年	2022
卷号	127 期号:2
英文摘要	Intense snowfall sublimation was observed during a precipitation event over Davis in the Vestfold Hills, East Antarctica, from 08 to 10 January 2019. Radar observations and simulations from the Weather Research and Forecasting model revealed that orographic gravity waves (OGWs), generated by a north-easterly flow impinging on the ice ridge upstream of Davis, were responsible for snowfall sublimation through a foehn effect. Despite the strong meridional moisture advection associated with an atmospheric river (AR) during this event, almost no precipitation reached the ground at Davis. We found that the direction of the synoptic flow with respect to the orography determined the intensity of OGWs over Davis, which in turn directly influenced the snowfall microphysics. We hypothesize that turbulence induced by the OGWs likely enhanced the aggregation process, as identified thanks to dual-polarization and dual-frequency radar observations. This study suggests that despite the intense AR, the precipitation distribution was determined by local processes tied to the orography. The mechanisms found in this case study could contribute to the extremely dry climate of the Vestfold Hills, one of the main Antarctic oases.
英文关键词	snowfall microphysics sublimation orographic gravity waves foehn atmospheric river Antarctica
类型	Article
语种	英语
开放获取类型	hybrid, Green Published
收录类别	SCI-E
WOS记录号	WOS:000751226300010
WOS关键词	SECONDARY ICE PARTICLES ; VERTICAL PROFILES ; PART I ; EXTREME PRECIPITATION ; SOUTHERN-OCEAN ; GRAVITY-WAVES ; RADAR ; MODEL ; SNOWFALL ; CLOUDS
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376506
作者单位	[Gehring, Josue; Vignon, Etienne; Billault-Roux, Anne-Claire; Ferrone, Alfonso; Berne, Alexis] Ecole Polytech Fed Lausanne EPFL, Environm Remote Sensing Lab LTE, Lausanne, Switzerland; [Vignon, Etienne] Sorbone Univ, Lab Meteorol Dynam, IPSL, CNRS,UMR, Paris, France; [Protat, Alain] Bur Meteorol, Melbourne, Vic, Australia; [Protat, Alain; Alexander, Simon P.] Univ Tasmania, Australian Antarctic Program Partnership, Inst Marine & Antarctic Sci, Hobart, Tas, Australia; [Alexander, Simon P.] Australian Antarctic Div, Kingston, Tas, Australia
推荐引用方式 GB/T 7714	Gehring, Josue,Vignon, Etienne,Billault-Roux, Anne-Claire,et al. Orographic Flow Influence on Precipitation During an Atmospheric River Event at Davis, Antarctica[J],2022,127(2).
APA	Gehring, Josue.,Vignon, Etienne.,Billault-Roux, Anne-Claire.,Ferrone, Alfonso.,Protat, Alain.,...&Berne, Alexis.(2022).Orographic Flow Influence on Precipitation During an Atmospheric River Event at Davis, Antarctica.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,127(2).
MLA	Gehring, Josue,et al."Orographic Flow Influence on Precipitation During an Atmospheric River Event at Davis, Antarctica".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 127.2(2022).