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DOI	10.5194/tc-12-3499-2018
	On the suitability of the Thorpe-Mason model for calculating sublimation of saltating snow
	Sharma V.; Comola F.; Lehning M.
发表日期	2018
ISSN	19940416
卷号	12 期号:11
英文摘要	The Thorpe and Mason (TM) model for calculating the mass lost from a sublimating snow grain is the basis of all existing small- and large-scale estimates of drifting snow sublimation and the associated snow mass balance of polar and alpine regions. We revisit this model to test its validity for calculating sublimation from saltating snow grains. It is shown that numerical solutions of the unsteady mass and heat balance equations of an individual snow grain reconcile well with the steady-state solution of the TM model, albeit after a transient regime. Using large-eddy simulations (LESs), it is found that the residence time of a typical saltating particle is shorter than the period of the transient regime, implying that using the steady-state solution might be erroneous. For scenarios with equal initial air and particle temperatures of 263.15 K, these errors range from 26% for low-wind, low-saturation-rate conditions to 38% for highwind, high-saturation-rate conditions. With a small temperature difference of 1K between the air and the snow particles, the errors due to the TM model are already as high as 100% with errors increasing for larger temperature differences. © Author(s) 2018.
学科领域	alpine environment; glacier mass balance; heat balance; large eddy simulation; mass balance; numerical model; polar region; residence time; saltation; snow; sublimation
语种	英语
scopus关键词	alpine environment; glacier mass balance; heat balance; large eddy simulation; mass balance; numerical model; polar region; residence time; saltation; snow; sublimation
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/119037
作者单位	School of Architecture, Civil and Environmental Engineering, Swiss Federal Institute of Technology, Lausanne, Switzerland; WSL Institute for Snow and Avalanche Research SLF, Davos, Switzerland
推荐引用方式 GB/T 7714	Sharma V.,Comola F.,Lehning M.. On the suitability of the Thorpe-Mason model for calculating sublimation of saltating snow[J],2018,12(11).
APA	Sharma V.,Comola F.,&Lehning M..(2018).On the suitability of the Thorpe-Mason model for calculating sublimation of saltating snow.Cryosphere,12(11).
MLA	Sharma V.,et al."On the suitability of the Thorpe-Mason model for calculating sublimation of saltating snow".Cryosphere 12.11(2018).