Title :
Evaluating the Potential of VI-LST Triangle Model for Quantitative Estimation of Soil Moisture using Optical Imagery
Author :
Hossain, A. K M Azad ; Easson, Greg
Author_Institution :
Dept. of Geol. & Geol. Eng., Univ. of Mississippi, Oxford, MS
Abstract :
This research evaluates the potential of the vegetation index (VI) - land surface (LST) triangle model for quantitative soil moisture study using Moderate Resolution Imaging Spectroradiometer (MODIS) data in a semi-arid environment. The preliminary results indicate that the VI-LST triangle model has potential to be used for quantitative soil moisture estimation by optical imagery if combined with a reference soil moisture data. The Advanced Microwave Scanning Radiometer-Earth Observing System (AMSR-E) provides quantitative soil moisture estimation at 25 km spatial resolution. AMSR-E soil moisture information can be used in the VI-LST triangle model in conjunction with MODIS reflectance and thermal data to estimate soil moisture at the spatial resolution of MODIS (1 km).
Keywords :
moisture; optical sensors; remote sensing; soil; AD 2006 08 10; AMSR-E; Advanced Microwave Scanning Radiometer Earth Observing System; Arizona; MODIS spatial resolution; Mexico; Moderate Resolution Imaging Spectroradiometer; Sonora; Upper San Pedro River; VI-LST triangle model; land surface temperature; optical imagery; quantitative soil moisture estimation; vegetation index; Geology; Land surface; Land surface temperature; MODIS; Microwave radiometry; Optical sensors; Rivers; Soil moisture; Spatial resolution; Vegetation mapping; AMSR-E imagery; MODIS imagery; Soil moisture; Triangle model;
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.2008.4779490
