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United States Department of Agriculture

Agricultural Research Service

Research Project: WATER QUALITY IMPROVEMENT FROM MANAGEMENT PRACTICES IN AGRICULTURAL WATERSHEDS

Location: Agroecosystems Management Research

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

Author
item Hornbuckle, Brian
item Rowlandson, Tracy
item Russell, Eric
item Kaleita, Amy
item Logsdon, Sally
item Kruger, Anton
item Yueh, Simon
item De Roo, Roger

Submitted to: IEEE IGARSS Annual Proceedings
Publication Type: Proceedings
Publication Acceptance Date: 7/12/2010
Publication Date: 7/25/2010
Citation: Hornbuckle, B.K., Rowlandson, T.L., Russell, E., Kaleita, A.L., Logsdon, S.D., Kruger, A., Yueh, S., De Roo, R.D. 2010. How Does Dew Affect L-band Backscatter? Analysis of PALS Data at the Iowa Validation Site and Implications for SMAP. In: Proceedings of the 2010 IEEE International Geoscience and Remote Sensing Symposium, July 25-30, 2010, Honolulu, HI. p. 4835-4838.

Interpretive Summary:

Technical 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.

Last Modified: 8/24/2016
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