How Does Dew Affect L–band Backscatter? Analysis of PALS Data at the Iowa Validation Site and Implications for SMAP

Date
2010-01-01
Authors
Hornbuckle, Brian
Rowlandson, Tracy
Russell, Eric
Kaleita, Amy
Kaleita, Amy
Logsdon, Sally
Kruger, Anton
Yueh, Simon
De Roo, Roger
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Agronomy
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AgronomyAgricultural and Biosystems Engineering
Abstract

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.

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This proceeding is from Geoscience and Remote Sensing Symposium (IGARSS), 2010 IEEE International (IEEE: 2010), 4835–4838, doi:10.1109/IGARSS.2010.5650792.

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