气候变化领域集成服务门户(CCPortal): Downscaling Snow Cover Fraction Data in Mountainous Regions Based on Simulated Inhomogeneous Snow Ablation

CCPortal

DOI	10.3390/rs70708995
	Downscaling Snow Cover Fraction Data in Mountainous Regions Based on Simulated Inhomogeneous Snow Ablation
	Li, Hong Yi; He, Yong Qi; Hao, Xiao Hua; Che, Tao; Wang, Jian; Huang, Xiao Dong
发表日期	2015
ISSN	2072-4292
起始页码	8995
结束页码	9019
卷号	7 期号:7
英文摘要	High-resolution snow distributions are essential for studying cold regions. However, the temporal and spatial resolutions of current remote sensing snow maps remain limited. Remotely sensed snow cover fraction (SCF) data only provide quantitative descriptions of snow area proportions and do not provide information on subgrid-scale snow locations. We present a downscaling method based on simulated inhomogeneous snow ablation capacities that are driven by air temperature and solar radiation data. This method employs a single parameter to adjust potential snow ablation capacities. Using this method, SCF data with a resolution of 500 m are downscaled to a resolution of 30 m. Then, 18 remotely sensed TM, CHRIS and EO-1 snow maps are used to verify the downscaled results. The mean overall accuracy is 0.69, the average root-mean-square error (RMSE) of snow-covered slopes between the downscaled snow map and the real snow map is 3.9 degrees, and the average RMSE of the sine of the snow covered aspects between the downscaled snow map and the real snow map is 0.34, which is equivalent to 19.9 degrees. This method can be applied to high-resolution snow mapping in similar mountainous regions.
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS关键词	SPATIAL-DISTRIBUTION ; WATER EQUIVALENT ; HEIHE RIVER ; MODEL ; RESOLUTION ; RADIATION ; MODIS ; PARAMETERIZATION ; AREA ; TEMPERATURE
WOS记录号	WOS:000360919900033
来源期刊	REMOTE SENSING
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/241014
作者单位	[Li, Hong Yi; Hao, Xiao Hua; Che, Tao; Wang, Jian] Chinese Acad Sci, Key Lab Remote Sensing Gansu Prov, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China; [Li, Hong Yi; Hao, Xiao Hua; Che, Tao] Chinese Acad Sci, Heihe Remote Sensing Expt Res Stn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China; [He, Yong Qi; Huang, Xiao Dong] Lanzhou Univ, Coll Pastoral Agr Sci & Technol, Key Lab Grassland Agroecol Syst, Minist Agr, Lanzhou 730020, Peoples R China; [Che, Tao] CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Li, Hong Yi,He, Yong Qi,Hao, Xiao Hua,et al. Downscaling Snow Cover Fraction Data in Mountainous Regions Based on Simulated Inhomogeneous Snow Ablation[J]. 中国科学院西北生态环境资源研究院,2015,7(7).
APA	Li, Hong Yi,He, Yong Qi,Hao, Xiao Hua,Che, Tao,Wang, Jian,&Huang, Xiao Dong.(2015).Downscaling Snow Cover Fraction Data in Mountainous Regions Based on Simulated Inhomogeneous Snow Ablation.REMOTE SENSING,7(7).
MLA	Li, Hong Yi,et al."Downscaling Snow Cover Fraction Data in Mountainous Regions Based on Simulated Inhomogeneous Snow Ablation".REMOTE SENSING 7.7(2015).