Physics
Scientific paper
Nov 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3221409f&link_type=abstract
Geophysical Research Letters, Volume 32, Issue 21, CiteID L21409
Physics
1
Global Change: Climate Variability (1635, 3305, 3309, 4215, 4513), Global Change: Remote Sensing (1855), Global Change: Water Cycles (1836), Hydrology: Drought
Scientific paper
We analyzed 2000-2004 growing-season SeaWinds Ku-band microwave backscatter and MODIS leaf area index (LAI) data over North America. Large anomalies in mid-growing-season mean backscatter and LAI, relative to 5-year mean values, occurred primarily in the western Great Plains; backscatter and LAI anomalies had similar spatial patterns across this region. Backscatter and LAI time series data for three ~103 km2 regions in the western Great Plains were strongly correlated (r2 ~ 0.6-0.8), and variability in mid-growing season values was well-correlated with annual precipitation (October through September). The results indicate that SeaWinds backscatter is sensitive to interannual variability in grassland biomass/productivity, and can provide an assessment that is completely independent of optical/near-infrared remote sensing instruments.
Fahnestock Mark
Frolking Steve
Kimball Justine
McDonald Keith
Milliman T.
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