气候变化领域集成服务门户(CCPortal): A New Index for Snow/Ice/Ice-Snow Discrimination Based on BRDF Characteristic Observation Data

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DOI	10.1029/2021JD035742
	A New Index for Snow/Ice/Ice-Snow Discrimination Based on BRDF Characteristic Observation Data
	Ji, Wenzheng; Hao, Xiaohua; Shao, Donghang; Yang, Qian; Wang, Jian; Li, Hongyi; Huang, Guanghui
通讯作者	Hao, XH (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Remote Sensing Gansu Prov, Lanzhou, Peoples R China. ; Hao, XH (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Heihe Remote Sensing Expt Res Stn, Lanzhou, Peoples R China.
发表日期	2022
ISSN	2169-897X
EISSN	2169-8996
卷号	127 期号:3
英文摘要	The field observation data of ice-snow (the ice covered by snow) is scarce, causing a poor understanding of its characteristics and some uncertainty in ice process simulation. Using a multi-angle observation instrument, we conducted a field investigation and measured the snow/ice/ice-snow Bidirectional Reflectance Distribution Function. Both snow and ice have the typical feature of forwarding scattering, and the scattering intensity is governed by their properties (i.g., snow grain size, liquid water content, and transparency). The characteristics of ice-snow are similar to snow when a small amount of fresh snow is deposited on the ice surface, but will change significantly when the surface snow is metamorphic (melt or refreezing). This change can affect the monitoring accuracy of snow and ice using remote sensing data. In this study, a Normalized Difference Ice-Snow Index (NDISI) was developed using two bands (i.e., 1,080-1,120 nm and 1,760-1,800 nm). We applied spectra from different regions to verify the ability of NDISI and its application for distinguishing ice-snow. This work should be helpful for the fine classification between snow, ice, and ice-snow. It can support a more accurate simulation of ice phenology.
关键词	COVER EXTENT PRODUCT SEA-ICE BIDIRECTIONAL REFLECTANCE ANISOTROPIC REFLECTANCE SURFACE-ROUGHNESS SPECTRAL ALBEDO LANDSAT TM GRAIN-SIZE MODEL MODIS
英文关键词	snow; ice; ice-snow; BRDF; reflection characteristics
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000760383000011
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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/253815
作者单位	[Ji, Wenzheng; Hao, Xiaohua; Shao, Donghang; Wang, Jian; Li, Hongyi] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Remote Sensing Gansu Prov, Lanzhou, Peoples R China; [Ji, Wenzheng] Univ Chinese Acad Sci, Beijing, Peoples R China; [Hao, Xiaohua; Li, Hongyi] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Heihe Remote Sensing Expt Res Stn, Lanzhou, Peoples R China; [Yang, Qian] Jilin Jianzhu Univ, Sch Geomat & Prospecting Engn, Changchun, Peoples R China; [Huang, Guanghui] Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Ji, Wenzheng,Hao, Xiaohua,Shao, Donghang,et al. A New Index for Snow/Ice/Ice-Snow Discrimination Based on BRDF Characteristic Observation Data[J]. 中国科学院西北生态环境资源研究院,2022,127(3).
APA	Ji, Wenzheng.,Hao, Xiaohua.,Shao, Donghang.,Yang, Qian.,Wang, Jian.,...&Huang, Guanghui.(2022).A New Index for Snow/Ice/Ice-Snow Discrimination Based on BRDF Characteristic Observation Data.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,127(3).
MLA	Ji, Wenzheng,et al."A New Index for Snow/Ice/Ice-Snow Discrimination Based on BRDF Characteristic Observation Data".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 127.3(2022).