Title :
Retrieval of single scattering albedo of winter wheat in North China Plain based on AMSR-E data
Author :
Wu, Fengmin ; Chai, Linna ; Zhang, Lixin ; Jiang, Lingmei ; Yang, Juntao
Author_Institution :
State Key Lab. of Remote Sensing Sci., Beijing Normal Univ., Beijing, China
Abstract :
In this study, a parameterized first-order radiative transfer (RT) model for short vegetation layer is employed to retrieve the single scattering albedo of winter wheat by combining passive microwave AMSR-E data with optical MODIS data. The microwave vegetation indices (MVIs) with two adjacent frequencies of AMSR-E at H/V polarization derived from the parameterized model are used to cancel out the ground surface emission signals. Then a simulating database based on field measured parameters is established to figure out the relationship of the optical thickness, single scattering albedo at C and X band, respectively. Finally the characteristics of retrieved single scattering albedo are analyzed and the daily NDVI was utilized for evaluating the retrieved results.
Keywords :
albedo; crops; geophysical signal processing; radiative transfer; vegetation mapping; C band; H polarization; North China plain; V polarization; X band; daily NDVI; field measured parameters; ground surface emission signals; microwave vegetation indices; optical MODIS data; optical thickness; parameterized first-order radiative transfer model; passive microwave AMSR-E data; short vegetation layer; single scattering albedo; winter wheat; Databases; MODIS; Microwave theory and techniques; Optical scattering; Optical sensors; Vegetation mapping; parameterized model; passive microwave; single scattering albedo; the first-order radiative transfer theory;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International
Conference_Location :
Munich
Print_ISBN :
978-1-4673-1160-1
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2012.6352747
