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http://dx.doi.org/10.11108/kagis.2018.21.2.068

Assessment of the Relationship between Air Temperature and TOA Brightness Temperature in Different Seasons Using Landsat-8 TIRS  

CHOUNG, Yun-Jae (Research Institute of Spatial Information Technology, GEO C&I Co., Ltd.)
CHUNG, Youn-In (Dept. of Civil Engineering, Keimyung University)
CHOI, Soo-Young (Institute of Spatial Information Technology Research, U&GIT Co., Ltd.)
Publication Information
Journal of the Korean Association of Geographic Information Studies / v.21, no.2, 2018 , pp. 68-79 More about this Journal
Abstract
In general, Top Of Atmosphere(TOA) brightness temperature is closely related to air temperature. Brightness temperature can be derived from the Thermal Infra-Red Sensors (TIRS) of the earth observation satellites such as the Landsat series. The TIRS instrument of the Landsat-8 satellite collects the two spectral bands (Bands 10 and 11) that measure brightness temperature. In this research, the relationship between the air temperature data measured by the weather stations in Seoul, South Korea and the brightness temperature data separately derived from Bands 10 and 11 of the Landsat-8 satellite were assessed in the different seasons through the correlation analysis. The statistical results led to the following conclusions. First, brightness temperature is closely related to air temperature in order of Spring, Autumn, Winter and Summer. Second, when air temperature increases, brightness temperature also increases in Spring, Autumn and Winter but decreases in Summer. Third, Band 10 has a closer relationship to air temperature than Band 11.
Keywords
Air Temperature; TOA Brightness Temperature; Thermal Infra-Red Sensors; Landsat-8 Satellite; Correlation Analysis;
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