Land surface temperature and emissivity retrieved from AMSR passive micro-wave data

被引：0

作者：

Mao, KB ^{[1
]}

Shi, JC ^{[1
]}

Li, ZL ^{[1
]}

Qin, ZH ^{[1
]}

Jia, YY ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Remote Sensing Applicat, State LAB Remote Sensing Sci, Beijing 100101, Peoples R China

来源：

IGARSS 2005: IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM, VOLS 1-8, PROCEEDINGS | 2005年

关键词：

LST; emissivity; AMSR data;

D O I：

暂无

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

A regression analysis between brightness of all AMSR bands and MODIS land surface temperature product provided by NASA indicated good correlation, so retrieving land surface temperature from AMSR passive data is available without ground truth data (soil moisture and land surface type). The analysis results (North-Africa, North-East China, Tibet) indicate that the radiation mechanism of surface covered snow is different from others. In order to retrieve land surface temperature more accurately, the land surface at least are classified into two groups. For non-snow covered land surface, The average land surface temperature error is about2- 3 degrees C relative to the MODIS LST product. For snow covered land surface, The average land surface temperature error is about 3-4 degrees C relative to the MODIS LST product. On the other hand, the emissivity of passive microwave is very important parameter for retrieving soil moisture. We compute the emissivity through land surface temperature retrieved by statistical regression method and make some analysis.

引用

页码：2247 / 2249

页数：3

共 3 条

[1] LAND SURFACE-TEMPERATURE DERIVED FROM THE SSM/I PASSIVE MICROWAVE BRIGHTNESS TEMPERATURES [J].