Land Surface Temperature in Łódź Obtained from Landsat 5TM

Contemporary Trends in Geoscience

Joanna Jędruszkiewicz¹ 

关键词: Land Surface Temperature;    Landsat 5 TM;    Remote sensing;    emissivity;    NDVI;    temperatura powierzchni Ziemi;    LANDSAT 5TM;    obrazowanie satelitarne;    emisyjność;    NDVI;   

DOI  :  10.2478/ctg-2012-0003

学科分类：地质学

来源: De Gruyter

【 摘 要 】

The main aim of this paper is to present the spatial differentiation of Land Surface Temperature LST in Łódź based on Landsat 5 Thematic Mapper (L5TM) images. Analysis was performed for all L5TM images from 2011, with clear sky over Łódź. Land surface temperature (LST) play an important role in determination of weather conditions in boundary layer of atmosphere, especially connected with convection. Environmental satellites from Landsat series delivers the high resolution images of Earth’s surface and according to the estimations made on the ground of it are precise. LST depends widely on surface emissivity. In this paper the emissivity was estimated from MODIS sensor as well as NDVI index, then both method were compared. The processed images allowed to determine the warmest and the coldest areas in the administrative boundaries of Łódź. The highest LST values has been found in industrial areas and the in the heart of the city. However, there are some places lying in city outskirts, where the LST values are as high, for instance Lodz Airport. On the contrary the lowest LST values occur mostly in terrains covered with vegetation i.e. forests or city parks.

【 授权许可】

CC BY-NC-ND