气候变化领域集成服务门户(CCPortal): The RHOSSA campaign: Multi-resolution monitoring of the seasonal evolution of the structure and mechanical stability of an alpine snowpack

CCPortal

DOI	10.5194/tc-14-1829-2020
	The RHOSSA campaign: Multi-resolution monitoring of the seasonal evolution of the structure and mechanical stability of an alpine snowpack
	Calonne N.; Richter B.; Löwe H.; Cetti C.; Ter Schure J.; Van Herwijnen A.; Fierz C.; Jaggi M.; Schneebeli M.
发表日期	2020
ISSN	19940416
起始页码	1829
结束页码	1848
卷号	14 期号:6
英文摘要	The necessity of characterizing snow through objective, physically motivated parameters has led to new model formulations and new measurement techniques. Consequently, essential structural parameters such as density and specific surface area (for basic characterization) or mechanical parameters such as the critical crack length (for avalanche stability characterization) gradually replace the semiempirical indices acquired from traditional stratigraphy. These advances come along with new demands and potentials for validation. To this end, we conducted the RHOSSA field campaign, in reference to density (span classCombining double low line"inline-formula"iρ/i/span) and specific surface area (SSA), at the Weissfluhjoch research site in the Swiss Alps to provide a multi-instrument, multi-resolution dataset of density, SSA and critical crack length over the complete winter season of 2015-2016. In this paper, we present the design of the campaign and a basic analysis of the measurements alongside predictions from the model SNOWPACK. To bridge between traditional and new methods, the campaign comprises traditional profiles, density cutter, IceCube, SnowMicroPen (SMP), micro-computed-tomography, propagation saw tests and compression tests. To bridge between different temporal resolutions, the traditional weekly to biweekly (every 2 weeks, used in this sense throughout the paper) snow pits were complemented by daily SMP measurements. From the latter, we derived a recalibration of the statistical retrieval of density and SSA for SMP version 4 that yields an unprecedented spatiotemporal picture of the seasonal evolution of density and SSA in a snowpack. Finally, we provide an intercomparison of measured and modeled estimates of density and SSA for four characteristic layers over the entire season to demonstrate the potential of high-temporal-resolution monitoring for snowpack model validation. © Author(s) 2020.
英文关键词	avalanche; compression; crack; data set; model validation; prediction; snowpack; surface area; temporal analysis; tomography; winter; Alps; Graubunden; Switzerland; Weissfluhjoch
语种	英语
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/202040
作者单位	WSL Institute for Snow and Avalanche Research SLF, Davos Dorf, Switzerland; CNRS, CNRM UMR 3589, Centre d'Etudes de la Neige, Grenoble, France
推荐引用方式 GB/T 7714	Calonne N.,Richter B.,Löwe H.,et al. The RHOSSA campaign: Multi-resolution monitoring of the seasonal evolution of the structure and mechanical stability of an alpine snowpack[J],2020,14(6).
APA	Calonne N..,Richter B..,Löwe H..,Cetti C..,Ter Schure J..,...&Schneebeli M..(2020).The RHOSSA campaign: Multi-resolution monitoring of the seasonal evolution of the structure and mechanical stability of an alpine snowpack.Cryosphere,14(6).
MLA	Calonne N.,et al."The RHOSSA campaign: Multi-resolution monitoring of the seasonal evolution of the structure and mechanical stability of an alpine snowpack".Cryosphere 14.6(2020).