2017 International Conference on Computer, Electronics and Communication Engineering (CECE 2017) ISBN: 978-1-60595-476-9
Retrieval of Land Surface Temperature from Landsat 8 for the Main Urban Area of Kunming
Meng-zhu SUN1,2, Kun YANG1,3 and Jia-sheng WANG1,3* 1The Engineering Research Center of GIS Technology in Western China of Ministry of China, Kunming 650500, China 2School of Tourism and Geographical Science, Yunnan Normal University, Kunming 650500, China 3School of Information Science and Technology, Yunnan Normal University, Kunming 650500, China *Corresponding author
Keywords: Landsat 8, Kunming, Land surface temperature, Radiative transfer equation.
Abstract. Based on Landsat 8 TIRS 10 data, using the radiative transfer equation (RTE) and the improved mono-window algorithm (TIRS_SC) to retrieve the land surface temperature (LST) for the main urban area of Kunming, and compare the accuracy of the two methods. Then use the high precision method to retrieve LST of the main urban area of Kunming in 2013-2015. Results showed that RTE is more suitable for retrieval LST in the main urban area of Kunming. The LST of most area in Wuhua District and Guandu District is higher, and the low LST is mainly the Dian Lake and other region where there is water.
Introduction Land Surface Temperature (LST) is a key parameter in the analysis and simulation of land surface physical processes at the regional and the global scale; it’s also an important parameter in the global physical energy and water balance [1]. It has an important application in disaster monitoring and prevention, and the research of urban heat island effect etc. [2-4]. Landsat data is used in retrieval of LST by many people with high resolution, a large covered range and free. TM data has only one thermal infrared band. It usually used RTE, mono-window algorithm [5] and single-channel algorithm [6, 7] to retrieve LST [8, 9]. Landsat 8 data has two thermal infrared bands. It can be used in split window algorithm to retrieve LST but the result is not so good [10]. In this paper, RTE and TIRS_SC are used to retrieve LST for the main urban area of Kunming. Then use the high precision method to retrieve LST of the main urban area of Kunming in 2013-2015. It has a certain guiding significance for the department to formulate sustainable planning.
LST Retrieval Algorithm Radiative Transfer Equation (RTE) Radiative transfer equation (RTE) is one of the earliest developed algorithms. It can be widely used in any thermal infrared sensor data and it can be written as