Title :
Surface temperature effect on soil moisture retrieval from AMSR-E
Author :
Guo, Ying ; Shi, Jiancheng ; Mao, Kebiao
Author_Institution :
Graduate Univ. of Chinese Acad. of Sci., Beijing
Abstract :
Surface temperature has significant impact on the microwave brightness temperature measurements. In this study, we evaluate the surface temperature effects on soil moisture estimation. Two soil moisture inversion methods for bare surface based on surface microwave emission model-advanced integral equation model (AIEM) were developed. A parameterized model-Qp model was used to cancel out the roughness effect and statistical method was used to cancel out the surface temperature effect. Finally, the in situ measurements from CEOP experiment were used to validate the retrieval results of both algorithms.
Keywords :
data acquisition; hydrological techniques; integral equations; land surface temperature; microwave measurement; moisture measurement; soil; statistical analysis; AMSR-E; integral equation; microwave brightness temperature measurement; parameterized model-Qp model; soil moisture estimation; soil moisture inversion; soil moisture retrieval; statistical method; surface microwave emission model; surface temperature effect; Brightness temperature; Integral equations; Microwave measurements; Microwave theory and techniques; Rough surfaces; Soil measurements; Soil moisture; Statistical analysis; Surface roughness; Temperature measurement;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2007. IGARSS 2007. IEEE International
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-1211-2
Electronic_ISBN :
978-1-4244-1212-9
DOI :
10.1109/IGARSS.2007.4423018