气候变化领域集成服务门户(CCPortal): Relative performance of empirical and physical models in assessing the seasonal and annual glacier surface mass balance of Saint-Sorlin Glacier (French Alps)

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DOI	10.5194/tc-12-1367-2018
	Relative performance of empirical and physical models in assessing the seasonal and annual glacier surface mass balance of Saint-Sorlin Glacier (French Alps)
	Réveillet M.; Six D.; Vincent C.; Rabatel A.; Dumont M.; Lafaysse M.; Morin S.; Vionnet V.; Litt M.
发表日期	2018
ISSN	19940416
卷号	12 期号:4
英文摘要	This study focuses on simulations of the seasonal and annual surface mass balance (SMB) of Saint-Sorlin Glacier (French Alps) for the period 1996-2015 using the detailed SURFEX/ISBA-Crocus snowpack model. The model is forced by SAFRAN meteorological reanalysis data, adjusted with automatic weather station (AWS) measurements to ensure that simulations of all the energy balance components, in particular turbulent fluxes, are accurately represented with respect to the measured energy balance. Results indicate good model performance for the simulation of summer SMB when using meteorological forcing adjusted with in situ measurements. Model performance however strongly decreases without in situ meteorological measurements. The sensitivity of the model to meteorological forcing indicates a strong sensitivity to wind speed, higher than the sensitivity to ice albedo. Compared to an empirical approach, the model exhibited better performance for simulations of snow and firn melting in the accumulation area and similar performance in the ablation area when forced with meteorological data adjusted with nearby AWS measurements. When such measurements were not available close to the glacier, the empirical model performed better. Our results suggest that simulations of the evolution of future mass balance using an energy balance model require very accurate meteorological data. Given the uncertainties in the temporal evolution of the relevant meteorological variables and glacier surface properties in the future, empirical approaches based on temperature and precipitation could be more appropriate for simulations of glaciers in the future. © 2018 Author(s).
学科领域	accuracy assessment; albedo; empirical analysis; energy balance; mass balance; model validation; performance assessment; seasonal variation; simulation; snowpack; temporal evolution; weather station; wind velocity; Alps; Crocus
语种	英语
scopus关键词	accuracy assessment; albedo; empirical analysis; energy balance; mass balance; model validation; performance assessment; seasonal variation; simulation; snowpack; temporal evolution; weather station; wind velocity; Alps; Crocus
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/119176
作者单位	Univ. Grenoble Alpes, CNRS, IRD, Institut des Geósciences de l'Environnement, Grenoble, 38000, France; Méteó-France-CNRS, CNRM UMR 3589, Centre d'Etudes de la Neige, Grenoble, France; ICIMOD, G.P.O. Box 3226, Kathmandu, Nepal; Faculty of Geosciences, Utrecht University, Utrecht, Netherlands; Centro de Estudios Avanzados en Zonas Áridas (CEAZA), ULS-Campus Andrés Bello, Raúl Britan 1305, La Serena, Chile
推荐引用方式 GB/T 7714	Réveillet M.,Six D.,Vincent C.,et al. Relative performance of empirical and physical models in assessing the seasonal and annual glacier surface mass balance of Saint-Sorlin Glacier (French Alps)[J],2018,12(4).
APA	Réveillet M..,Six D..,Vincent C..,Rabatel A..,Dumont M..,...&Litt M..(2018).Relative performance of empirical and physical models in assessing the seasonal and annual glacier surface mass balance of Saint-Sorlin Glacier (French Alps).Cryosphere,12(4).
MLA	Réveillet M.,et al."Relative performance of empirical and physical models in assessing the seasonal and annual glacier surface mass balance of Saint-Sorlin Glacier (French Alps)".Cryosphere 12.4(2018).