Title :
Howdoes dew affect L-band backscatter? analysis of pals data at the Iowa validation site and implications for smap
Author :
Hornbuckle, Brian K. ; Rowlandson, Tracy L. ; Russell, Eric ; Kaleita, Amy ; Logsdon, Sally ; Kruger, Anton ; Yueh, Simon ; De Roo, Roger D.
Author_Institution :
USDA Agric. Res. Service, Iowa State Univ., Ames, IA, USA
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.
Keywords :
backscatter; electromagnetic wave scattering; hydrological techniques; microwave measurement; moisture measurement; radiometers; remote sensing; soil; Iowa validation site; L-band backscatter; L-band radiometer; NASA; PALS data; SMAP; dew; global scale measurement; microwave remote sensing; satellite observation; soil moisture; soil moisture active passive satellite mission; soybean canopy; Backscatter; Radar; Remote sensing; Soil measurements; Soil moisture; Temperature measurement; Microwave remote sensing; dew; radar; soil moisture; vegetation;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2010 IEEE International
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-9565-8
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2010.5650792
