干旱区生态环境知识资源中心(Arid): MODIS Does Not Capture the Spatial Heterogeneity of Snow Cover Induced by Solar Radiation

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DOI	10.3389/feart.2021.640250
	MODIS Does Not Capture the Spatial Heterogeneity of Snow Cover Induced by Solar Radiation
	Bouamri, Hafsa; Kinnard, Christophe; Boudhar, Abdelghani; Gascoin, Simon; Hanich, Lahoucine; Chehbouni, Abdelghani
通讯作者	Kinnard, C (corresponding author), Univ Quebec Trois Rivieres, Ctr Rech Interact Bassins Versants Ecosyst Aquat, Dept Sci Environm, Trois Rivieres, PQ, Canada.
来源期刊	FRONTIERS IN EARTH SCIENCE
EISSN	2296-6463
出版年	2021
卷号	9
英文摘要	Estimating snowmelt in semi-arid mountain ranges is an important but challenging task, due to the large spatial variability of the snow cover and scarcity of field observations. Adding solar radiation as snowmelt predictor within empirical snow models is often done to account for topographically induced variations in melt rates. This study examines the added value of including different treatments of solar radiation within empirical snowmelt models and benchmarks their performance against MODIS snow cover area (SCA) maps over the 2003-2016 period. Three spatially distributed, enhanced temperature index models that, respectively, include the potential clear-sky direct radiation, the incoming solar radiation and net solar radiation were compared with a classical temperature-index (TI) model to simulate snowmelt, SWE and SCA within the Rheraya basin in the Moroccan High Atlas Range. Enhanced models, particularly that which includes net solar radiation, were found to better explain the observed SCA variability compared to the TI model. However, differences in model performance in simulating basin wide SWE and SCA were small. This occurs because topographically induced variations in melt rates simulated by the enhanced models tend to average out, a situation favored by the rather uniform distribution of slope aspects in the basin. While the enhanced models simulated more heterogeneous snow cover conditions, aggregating the simulated SCA from the 100 m model resolution towards the MODIS resolution (500 m) suppresses key spatial variability related to solar radiation, which attenuates the differences between the TI and the radiative models. Our findings call for caution when using MODIS for calibration and validation of spatially distributed snow models.
英文关键词	snow water equivalent snow cover temperature index model solar radiation snowmelt moderate resolution imaging spectro-radiometer snow spatial heterogeneity Moroccan Atlas
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000649662100001
WOS关键词	MOROCCAN HIGH-ATLAS ; HAUT-GLACIER-DAROLLA ; WATER EQUIVALENT ; ENERGY-BALANCE ; CLIMATE-CHANGE ; MOUNTAINOUS WATERSHEDS ; HYDROLOGICAL MODEL ; RUNOFF MODEL ; TEMPERATURE ; MELT
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
来源机构	French National Research Institute for Sustainable Development
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368838
作者单位	[Bouamri, Hafsa; Boudhar, Abdelghani] Sultan Moulay Slimane Univ, Fac Sci & Technol, Valorisat & Remote Sensing Team, Water Resources Management Valorisat & Remote Sen, Beni Mellal, Morocco; [Kinnard, Christophe] Univ Quebec Trois Rivieres, Ctr Rech Interact Bassins Versants Ecosyst Aquat, Dept Sci Environm, Trois Rivieres, PQ, Canada; [Boudhar, Abdelghani; Hanich, Lahoucine] Mohammed VI Polytech Univ, Ctr Remote Sensing Applicat CRSA, Ben Guerir, Morocco; [Gascoin, Simon; Chehbouni, Abdelghani] Univ Toulouse, Ctr Etud Spatiales Biosphere CESBIO, CNRS CNES IRD UPS, Toulouse, France; [Hanich, Lahoucine] Cadi Ayyad Univ, Fac Sci & Tech, Dept Earth Sci, Lab L3G, Marrakech, Morocco
推荐引用方式 GB/T 7714	Bouamri, Hafsa,Kinnard, Christophe,Boudhar, Abdelghani,et al. MODIS Does Not Capture the Spatial Heterogeneity of Snow Cover Induced by Solar Radiation[J]. French National Research Institute for Sustainable Development,2021,9.
APA	Bouamri, Hafsa,Kinnard, Christophe,Boudhar, Abdelghani,Gascoin, Simon,Hanich, Lahoucine,&Chehbouni, Abdelghani.(2021).MODIS Does Not Capture the Spatial Heterogeneity of Snow Cover Induced by Solar Radiation.FRONTIERS IN EARTH SCIENCE,9.
MLA	Bouamri, Hafsa,et al."MODIS Does Not Capture the Spatial Heterogeneity of Snow Cover Induced by Solar Radiation".FRONTIERS IN EARTH SCIENCE 9(2021).