Howdoes dew affect L-band backscatter? analysis of pals data at the Iowa validation site and implications for smap

Howdoes dew affect L-band backscatter? analysis of pals data at the Iowa validation site and implications for smap

NASA's Soil Moisture Active Passive satellite mission will use both an L-band radiometer and radar to produce global-scale measurements of soil moisture. L-band backscatter is also sensitive to the water content of vegetation. We found that a moderate dew increased the L-band backscatter of a s...

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Hauptverfasser: Hornbuckle, B K, Rowlandson, T L, Russell, E, Kaleita, A, Logsdon, S, Kruger, A, Simon Yueh, De Roo, R D
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Backscatter
dew
Microwave remote sensing
Radar
Remote sensing
Soil measurements
Soil moisture
Temperature measurement
vegetation
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Zusammenfassung:NASA's Soil Moisture Active Passive satellite mission will use both an L-band radiometer and radar to produce global-scale measurements of soil moisture. L-band backscatter is also sensitive to the water content of vegetation. We found that a moderate dew increased the L-band backscatter of a soybean canopy by 1 dB. Dew thus has the potential to add error to satellite observations of soil moisture.
ISSN:2153-6996
2153-7003
DOI:10.1109/IGARSS.2010.5650792