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Variability of the Seasonally Integrated Normalized Difference Vegetation Index Across the North Slope of Alaska in the 1990s

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Abstract:

The interannual variability and trend of above-ground photosynthetic activity of Arctic tundra vegetation in the 1990s is examined for the north slope region of Alaska, based on the seasonally integrated normalized difference vegetation index (SINDVI) derived from local area coverage (LAC) National Oceanic and Atmospheric Administration (NOAA) Advanced Very High Resolution Radiometer (AVHRR) data. Smaller SINDVI values occurred during the three years (1992-1994) following the volcanic eruption of Mt Pinatubo. Even after implementing corrections for this stratospheric aerosol effect and adjusting for changes in radiometric calibration coefficients, an apparent increasing trend of SINDVI in the 1990s is evident for the entire north slope. The most pronounced increase was observed for the foothills physiographical province.

Document Type: Research Article

DOI: http://dx.doi.org/10.1080/0143116021000020144

Affiliations: 1: Department of Geography, San Diego State University, San Diego, CA 92182-4493, USA 2: US Geological Survey (USGS) Biological Research Division, Juneau 99824, AK, USA 3: Department of Geography, Boston University, Boston, MA 02215, USA 4: Department of Biology, San Diego State University, San Diego, CA 92182-4614, USA

Publication date: March 1, 2003

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