Assessment with satellite data of the urban heat island effects in Asian mega cities

Assessment with satellite data of the urban heat island effects in Asian mega cities This study focuses on using remote sensing for comparative assessment of surface urban heat island (UHI) in 18 mega cities in both temperate and tropical climate regions. Least-clouded day- and night-scenes of TERRA/MODIS acquired between 2001 and 2003 were selected to generate land-surface temperature (LST) maps. Spatial patterns of UHIs for each city were examined over its diurnal cycle and seasonal variations. A Gaussian approximation was applied in order to quantify spatial extents and magnitude of individual UHIs for inter-city comparison. To reveal relationship of UHIs with surface properties, UHI patterns were analyzed in association with urban vegetation covers and surface energy fluxes derived from high-resolution Landsat ETM+ data. This study provides a generalized picture on the UHI phenomena in the Asian region and the findings can be used to guide further study integrating satellite high-resolution thermal data with land-surface modeling and meso-scale climatic modeling in order to understand impacts of urbanization on local climate in Asia. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Applied Earth Observation and Geoinformation Elsevier

Assessment with satellite data of the urban heat island effects in Asian mega cities

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Publisher
Elsevier
Copyright
Copyright © 2005 Elsevier B.V.
ISSN
0303-2434
D.O.I.
10.1016/j.jag.2005.05.003
Publisher site
See Article on Publisher Site

Abstract

This study focuses on using remote sensing for comparative assessment of surface urban heat island (UHI) in 18 mega cities in both temperate and tropical climate regions. Least-clouded day- and night-scenes of TERRA/MODIS acquired between 2001 and 2003 were selected to generate land-surface temperature (LST) maps. Spatial patterns of UHIs for each city were examined over its diurnal cycle and seasonal variations. A Gaussian approximation was applied in order to quantify spatial extents and magnitude of individual UHIs for inter-city comparison. To reveal relationship of UHIs with surface properties, UHI patterns were analyzed in association with urban vegetation covers and surface energy fluxes derived from high-resolution Landsat ETM+ data. This study provides a generalized picture on the UHI phenomena in the Asian region and the findings can be used to guide further study integrating satellite high-resolution thermal data with land-surface modeling and meso-scale climatic modeling in order to understand impacts of urbanization on local climate in Asia.

Journal

International Journal of Applied Earth Observation and GeoinformationElsevier

Published: Jan 1, 2006

References

  • Impact of anthropogenic heat on urban climate in Tokyo
    Ichinose, T.; Shimodozono, K.; Hanaki, K.
  • Recovering surface temperature and emissivity from thermal infrared multispectral data
    Schmugge, T.; Hook, S.J.; Coll, C.
  • Satellite-measured growth of the urban heat island of Houston, Texas
    Streutker, D.R.
  • Thermal remote sensing of urban climates
    Voogt, J.A.; Oke, T.R.
  • Estimation of land-surface temperature–vegetation abundance relationship for urban heat island studies
    Weng, Q.; Lu, D.; Schubring, J.

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