Relationship among Surface Temperature, Vegetation Index and Ground Cover in Osaka City Area Using Landsat TM Data

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概要

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• Landsat-5 TM images for Osaka city area in different seasons are analyzed in this study. After the classification of ground covers, the surface temperature (T_s) and the normalized difference vegetation index (NDVI) are derived from satellite data. The distributions and seasonal variations of T_s and NDVI are obtained from various types of ground covers. There are higher surface temperatures in urban-residential areas and bare lands than in open water and vegetation areas. The NDVI appears to be an indicator of the difference in surface properties such as evapotranspiration and heat storage capacity. Higher NDVI values are observed in vegetated areas, while lower values are associated with unvegetated regions and open water. The relationships between T_s and NDVI in vegetated areas are analyzed for different seasons, there is a negative correlation between them in summer, whereas, in other seasons, this correlation becomes weaker due to the decreasing of surface temperature, which governs evapotranspirations and reduces latent heat from plants' surfaces.

• 1996-03-31

著者

• Aono Y

  Coll. Agriculture

• Aono Yasuyuki

  Laboratory Of Atmospheric Environment College Of Agriculture

• Monji Nobutaka

  Laboratory Of Atmospheric Environment College Of Agriculture

• ZHANG Xiaochuan

  Laboratory of Atmospheric Environment, College of Agriculture

• Zhang Xiaochuan

  Laboratory Of Atmospheric Environment College Of Agriculture

関連論文

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• Relationship among Surface Temperature, Vegetation Index and Ground Cover in Osaka City Area Using Landsat TM Data
• Spectra of Vertical Velocity and Temperature Fluctuations in a Taro Canopy
• Dynamic Behavior of the Moisture near the Soil-Atmosphere Boundary

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