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Open-File Report 2010–1027

Multitemporal L- and C-Band Synthetic Aperture Radar To Highlight Differences in Water Status Among Boreal Forest and Wetland Systems in the Yukon Flats, Interior Alaska

By Andrew W. Balser 1 and Bruce K. Wylie2

1University of Alaska Fairbanks, Institute of Arctic Biology, Fairbanks, AK 99775.
2U.S. Geological Survey, Earth Resources Observation and Science Center, Sioux Falls, SD 57198.
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Abstract

Tracking landscape-scale water status in high-latitude boreal systems is indispensible to understanding the fate of stored and sequestered carbon in a climate change scenario. Spaceborne synthetic aperture radar (SAR) imagery provides critical information for water and moisture status in Alaskan boreal environments at the landscape scale. When combined with results from optical sensor analyses, a complementary picture of vegetation, biomass, and water status emerges. Whereas L-band SAR showed better inherent capacity to map water status, C-band had much more temporal coverage in this study. Analysis through the use of L- and C-band SARs combined with Landsat Enhanced Thematic Mapper Plus (ETM+) enables landscape stratification by vegetation and by seasonal and interannual hydrology. Resultant classifications are highly relevant to biogeochemistry at the landscape scale. These results enhance our understanding of ecosystem processes relevant to carbon balance and may be scaled up to inform regional carbon flux estimates and better parameterize general circulation models (GCMs).

First posted March 5, 2010

For additional information contact:
U.S. Geological Survey
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47914 252nd Street
Sioux Falls, SD 57198-0001
Phone: 605-594-6151
Fax: 605-594-6589
http://eros.usgs.gov/

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Suggested citation:

Balser, A.W., and Wylie, B.K., 2010, Multitemporal L- and C-band synthetic aperture radar to highlight differences in water status among boreal forest and wetland systems in the Yukon Flats, interior Alaska: U.S. Geological Survey Open-File Report 2010–1027, 18 p., 2 app.



Contents

Abstract

Introduction

Methods

Results

Conclusion

References Cited

Appendix 1

Appendix 2


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