Title :
Forest Canopy Effects on the Estimation of Soil Moisture at L-Band
Author :
Kurum, Mehmet ; Lang, Roger H. ; O´Neill, P.E. ; Joseph, Alicia T. ; Cosh, Michael ; Jackson, Thomas
Author_Institution :
Dept. Of Electr. & Comput. Eng., George Washington Univ., Washington, DC, USA
Abstract :
Truck-based measurements of brightness temperature at L- band over small deciduous stands located in Maryland were made in 2006 and 2007. Ground truth data related to forest stands and the ground were also collected. The deciduous trees were modeled by the Distorted Born Approximation (DBA) in conjunction with Peak´s principle. The ground was modeled as a half space with surface roughness. The model has been used to investigate the sensitivity of L-band radiometers to soil moisture under forest stands. It was observed that it is possible to see through the forest to sense the underlying soil moisture and to see the seasonal changes.
Keywords :
atmospheric boundary layer; moisture; radiometers; remote sensing; soil; vegetation; AD 2006 to 2007; Distorted Born Approximation; L-band radiometers; Maryland; United States; brightness temperature; deciduous trees; forest canopy effects; forest stands; seasonal changes; soil moisture estimation; surface roughness; Approximation methods; Brightness temperature; Distortion measurement; L-band; Rough surfaces; Scattering; Soil measurements; Soil moisture; Surface roughness; Temperature measurement; Forest; radiometer; soil moisture;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2008. IGARSS 2008. IEEE International
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-2807-6
Electronic_ISBN :
978-1-4244-2808-3
DOI :
10.1109/IGARSS.2008.4778785
