气候变化领域集成服务门户(CCPortal): Simulation of wind-induced snow transport and sublimation in alpine terrain using a fully coupled snowpack/atmosphere model

CCPortal

DOI	10.5194/tc-8-395-2014
	Simulation of wind-induced snow transport and sublimation in alpine terrain using a fully coupled snowpack/atmosphere model
	Vionnet V.; Martin E.; Masson V.; Guyomarc'H G.; Naaim-Bouvet F.; Prokop A.; Durand Y.; Lac C.
发表日期	2014
ISSN	19940416
卷号	8 期号:2
英文摘要	In alpine regions, wind-induced snow transport strongly influences the spatio-temporal evolution of the snow cover throughout the winter season. To gain understanding on the complex processes that drive the redistribution of snow, a new numerical model is developed. It directly couples the detailed snowpack model Crocus with the atmospheric model Meso-NH. Meso-NH/Crocus simulates snow transport in saltation and in turbulent suspension and includes the sublimation of suspended snow particles. The coupled model is evaluated against data collected around the experimental site of Col du Lac Blanc (2720 m a.s.l., French Alps). First, 1-D simulations show that a detailed representation of the first metres of the atmosphere is required to reproduce strong gradients of blowing snow concentration and compute mass exchange between the snowpack and the atmosphere. Secondly, 3-D simulations of a blowing snow event without concurrent snowfall have been carried out. Results show that the model captures the main structures of atmospheric flow in alpine terrain. However, at 50 m grid spacing, the model reproduces only the patterns of snow erosion and deposition at the ridge scale and misses smaller scale patterns observed by terrestrial laser scanning. When activated, the sublimation of suspended snow particles causes a reduction of deposited snow mass of 5.3% over the calculation domain. Total sublimation (surface + blowing snow) is three times higher than surface sublimation in a simulation neglecting blowing snow sublimation. © Author(s) 2014.
学科领域	alpine environment; atmospheric modeling; numerical model; saltation; snow cover; spatiotemporal analysis; sublimation; terrain
语种	英语
scopus关键词	alpine environment; atmospheric modeling; numerical model; saltation; snow cover; spatiotemporal analysis; sublimation; terrain
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/120144
作者单位	Météo-France/CNRS, CNRM-GAME UMR3589, Toulouse, France; Météo-France/CNRS, CNRM-GAME UMR3589, CEN, St. Martin d'Hères, France; IRSTEA, UR ETNA, St. Martin d'Hères, France; Institue of Mountain Risk Engineering, University of Natural Resources and Applied Life Sciences, Wien, Austria
推荐引用方式 GB/T 7714	Vionnet V.,Martin E.,Masson V.,et al. Simulation of wind-induced snow transport and sublimation in alpine terrain using a fully coupled snowpack/atmosphere model[J],2014,8(2).
APA	Vionnet V..,Martin E..,Masson V..,Guyomarc'H G..,Naaim-Bouvet F..,...&Lac C..(2014).Simulation of wind-induced snow transport and sublimation in alpine terrain using a fully coupled snowpack/atmosphere model.Cryosphere,8(2).
MLA	Vionnet V.,et al."Simulation of wind-induced snow transport and sublimation in alpine terrain using a fully coupled snowpack/atmosphere model".Cryosphere 8.2(2014).