气候变化领域集成服务门户(CCPortal): Identifying river ice on the Tibetan Plateau based on the relative difference in spectral bands

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DOI	10.1016/j.jhydrol.2021.126613
	Identifying river ice on the Tibetan Plateau based on the relative difference in spectral bands
	Li, Haojie; Li, Hongyi; Wang, Jian; Hao, Xiaohua
通讯作者	Li, HY (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	0022-1694
EISSN	1879-2707
卷号	601
英文摘要	Remote sensing can potentially be used to monitor river ice, which is of significance for water resource utilization and hydrological research, especially on the Tibetan Plateau, over which field observations are severely limited. However, methods to monitor the river ice distribution over a large scale while overcoming snow interference have not been reported yet. To monitor river ice on the Tibetan Plateau on a large scale, we present a relative difference river ice (RDRI) identification method based on the differential spectral characteristics of river ice. The difference between the red and near-infrared (NIR) band reflectance of river ice is divided by the sum of the NIR reflectance and infrared band reflectance. The resulting values are notably different for river ice and other neighboring similar landscapes, such as snow cover. This method can overcome the interference caused by snow cover and other surrounding landscapes and enable the monitoring of river ice in different forms at different elevations on the Tibetan Plateau. The RDRI method is applied to Landsat and Sentinel-2 images. The validation results show that the mean overall accuracy and Kappa coefficient were 99.76% and 0.94, respectively. The comparison of the RDRI and normalized difference snow index (NDSI) methods indicates that the accuracies of both methods for river ice monitoring are similar in the absence of any snow disturbance. The RDRI can enable more accurate remote sensing of river ice on a large scale, which can support river ice distribution research over the Tibetan Plateau.
关键词	TEMPORAL PATTERNS BREAK-UP MODIS ACCURACY COVER
英文关键词	Tibetan Plateau; River ice; Remote sensing; RDRI method
语种	英语
WOS研究方向	Engineering ; Geology ; Water Resources
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS记录号	WOS:000695816300031
来源期刊	JOURNAL OF HYDROLOGY
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/254058
作者单位	[Li, Haojie; Li, Hongyi; Wang, Jian; Hao, Xiaohua] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China; [Li, Haojie; Li, Hongyi; Wang, Jian; Hao, Xiaohua] Chinese Acad Sci, Key Lab Remote Sensing Gansu Prov, Heihe Remote Sensing Expt Res Stn, Lanzhou 730000, Peoples R China; [Li, Haojie] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Wang, Jian] Jiangsu Ctr Collaborat Innovat Geog Informat Reso, Nanjing 210023, Peoples R China
推荐引用方式 GB/T 7714	Li, Haojie,Li, Hongyi,Wang, Jian,et al. Identifying river ice on the Tibetan Plateau based on the relative difference in spectral bands[J]. 中国科学院西北生态环境资源研究院,2021,601.
APA	Li, Haojie,Li, Hongyi,Wang, Jian,&Hao, Xiaohua.(2021).Identifying river ice on the Tibetan Plateau based on the relative difference in spectral bands.JOURNAL OF HYDROLOGY,601.
MLA	Li, Haojie,et al."Identifying river ice on the Tibetan Plateau based on the relative difference in spectral bands".JOURNAL OF HYDROLOGY 601(2021).