Title :
Spatial-temporal trend of seasonally-integrated normalized difference vegetation index as an indicator of changes in Arctic tundra vegetation in the early 1990s
Author :
Stow, Douglas ; Daeschner, Scott ; Hope, Allen ; Douglas, David ; Myneni, Ranga ; Zhou, Liming
Author_Institution :
Dept. of Geogr., San Diego State Univ., CA, USA
Abstract :
A cross-calibration procedure for reducing stratospheric aerosol effects was tested on an AVHRR LAC NDVI data set for the North Slope of Alaska in the early 1990s. Corrections based on atmospherically corrected GAC data increased NDVI values by as much as 0.05 and seasonally integrated NDVI by 0.3. Even after correction, NDVI values are lower for at least three years following the eruption of Mt. Pinatubo, suggesting a reduction in Arctic tundra productivity
Keywords :
aerosols; remote sensing; stratosphere; AVHRR LAC NDVI data set; Alaska; Arctic tundra productivity; Arctic tundra vegetation; Mt. Pinatubo; North Slope; atmospherically corrected GAC data; cross-calibration procedure; eruption; global area coverage; seasonally-integrated normalized difference vegetation index; spatial-temporal trend; stratospheric aerosol effects; Aerosols; Arctic; Biomedical optical imaging; Geography; Geology; Los Angeles Council; Productivity; Spatial resolution; Testing; Vegetation mapping;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2001. IGARSS '01. IEEE 2001 International
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-7031-7
DOI :
10.1109/IGARSS.2001.976095
