Estimating lake area in an Arctic landscape using linear mixture modeling with AVHRR data

Estimates of lake cover fractions in Arctic tundra landscapes at regional or circumpolar scales are important for modelling carbon, energy and water fluxes. Data from the Advanced Very High Resolution Radiometer (AVHRR) are well suited to large-area studies but most lakes in the Arctic tend to be sm...

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Bibliographic Details
Main Authors: A. S. Hope, L. L. Coulter, D. A. Stow
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Published: 1999
Subjects:
Arctic
north slope
Tundra
Alaska
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.218.1816
http://nrm.salrm.uaf.edu/~dverbyla/nrm641/readings/subpixel_arctic_lakes.pdf
Description
Summary:Estimates of lake cover fractions in Arctic tundra landscapes at regional or circumpolar scales are important for modelling carbon, energy and water fluxes. Data from the Advanced Very High Resolution Radiometer (AVHRR) are well suited to large-area studies but most lakes in the Arctic tend to be smaller than the size of the AVHRR ground elements (1.1 km at nadir). This study demonstrates that lake fractions on the North Slope of Alaska may be estimated with acceptable accuracy using linear mixture modelling and AVHRR data. Landscape stratification, combining multi-date images and the inclusion of a thermal band do not appear to improve model estimates when compared to those based on single-date red and near-infrared endmembers.

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