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Estimation and validation of land surface broadband albedos and leaf area index from EO-1 ALI data

Permanent URL:
http://handle.nal.usda.gov/10113/48382
File:
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Abstract:
The Advanced Land Imager (ALI) is a multispectral sensor onboard the National Aeronautics and Space Administration Earth Observing 1 (EO-1) satellite. It has similar spatial resolution to Landsat-7 Enhanced Thematic Mapper Plus (ETM+), with three additional spectral bands. We developed new algorithms for estimating both land surface broadband albedo and leaf area index (LAI) from ALI data. A recently developed atmospheric correction algorithm for ETM+ imagery was extended to retrieve surface spectral reflectance from ALI top-of-atmosphere observations. A feature common to these algorithms is the use of new multispectral information from ALI. The additional blue band of ALI is very useful in our atmospheric correction algorithm, and two additional ALI near-infrared bands are valuable for estimating both broadband albedo and LAI. Ground measurements at Beltsville, MD, and Coleambally, Australia, were used to validate the products generated by these algorithms.
Author(s):
Liang, Shunlin , Fang, Hongliang , Kaul, Monisha , Van Niel, Tom G. , McVicar, Tim R. , Pearlman, Jay S. , Walthall, Charles L. , Daughtry, Craig S.T. , Huemmrich, Karl Fred
Note:
Includes references
Source:
IEEE transactions on geoscience and remote sensing : a publication of the IEEE Geoscience and Remote Sensing Society 2003 June, v. 41, no. 6
Language:
English
Year:
2003
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Rights:
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.