NDLI: Global vegetation dynamic monitoring using multiple satellite observations, 2002

Content Provider	IEEE Xplore Digital Library
Author	Le Yang Hejuan Du Jing Zhao Qinhuo Liu
Copyright Year	2011
Description	Author affiliation: State Key Laboratory of Remote Sensing Science, Jointly Sponsored by the Institute of Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal University, 100101, China (Le Yang; Hejuan Du; Jing Zhao; Qinhuo Liu)
Abstract	The backscatter values of altimeter and scatterometer have been investigated for possible use over land surface, especially for vegetation covered area. The spatial and temporal variations of backscatter coefficient of merged altimeter data (JASON1/ ENVISAT RA2), QuikSCAT, and CYCLOPES Leaf Area Index (LAI) over seven selected vegetated areas from 2002 to 2007 are calculated and compared. Initial results indicated that over vegetated areas with a strong seasonal cycle, the altimeter and scatterometer Sigma0 measurements are strongly correlated to LAI. The Linear relation between VV/HH QuikSCAT backscatter and LAI is found at short and sparse vegetation, which is not valid at the dense vegetation. The VV/HH is not sensitive to low LAI value. The altimeter and scatterometer backscatter measurements of Ku band are useful to monitor vegetation dynamics as an independent data source compared to the products of optical sensors.
Starting Page	771
Ending Page	774
File Size	501956
Page Count	4
File Format	PDF
ISBN	9781457710032
ISSN	21537003
e-ISBN	9781457710056
DOI	10.1109/IGARSS.2011.6049244
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-07-24
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Barium Iron LAI Land altimetry Scatterometer Backscatter coefficient
Content Type	Text
Resource Type	Article

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