Atmosphere effect analysis and atmosphere correction of AMSR-E brightness temperature over land

Author

Dabin Ji ; Jiancheng Shi ; Tianxing Wang ; Chuan Xiong ; Qian Cui

Author_Institution

State Key Lab. of Remote Sensing Sci., Inst. of Remote Sensing & Digital Earth, Beijing, China

fYear

2014

fDate

13-18 July 2014

Firstpage

4107

Lastpage

4110

Abstract

Accurate microwave brightness temperature is important for the retrieval of land surface parameter. However, the existence of atmosphere affect acquisition of brightness temperature by microwave sensor onboard satellite. In this paper, atmosphere sensitivity of each band of AMSR-E is analyzed and an atmosphere correction method is developed with ancillary water vapor and cloud liquid water data for both clear and cloudy condition. As a validation, time series of microwave vegetation index is used to qualitatively verify the atmosphere corrected brightness temperature, and it shows that the atmosphere correction method make a good improvement on microwave vegetation index.

Keywords

atmospheric humidity; clouds; time series; vegetation; AMSR-E band; AMSR-E brightness temperature acquisition; accurate microwave brightness temperature; ancillary water vapor data; atmosphere corrected brightness temperature qualitative verification; atmosphere correction method; atmosphere effect analysis; atmosphere sensitivity; clear condition; cloud liquid water data; cloudy condition; land surface parameter retrieval; microwave sensor onboard satellite; microwave vegetation index time series; Atmospheric modeling; Brightness temperature; Clouds; Land surface; Liquids; Microwave theory and techniques; Atmosphere correction; Cloud liquid water; Microwave vegetation index; Water vapor;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium (IGARSS), 2014 IEEE International

Conference_Location

Quebec City, QC

Type

conf

DOI

10.1109/IGARSS.2014.6947390

Filename

6947390