Monthly and seasonal relationships between urban––rural differences in minimum, maximum, and average temperatures measured at surface-based observation stations were compared to satellite-derived Advanced Very High Resolution Radiometer estimates of a normalized difference vegetation index (NDVI) and surface radiant temperature ( T sfc ). The relationships between surface- and satellite-derived variables were developed during 1989––91 and tested on data acquired during 1992––93. The urban––rural differences in air temperature were linearly related to urban––rural differences in the NDVI and T sfc . A statistically significant but relatively small (less than 40%%) amount of the variation in these urban––rural differences in air temperature the urban heat island (UHI) bias was associated with variation in the urban––rural differences in NDVI and T sfc . A comparison of the satellite-based estimates of the UHI bias with population-based estimates of the UHI bias indicated similar levels of error. The use of satellite-derived data may contribute to a globally consistent method for analysis of the urban heat island bias.
Journal of Applied Meteorology – American Meteorological Society
Published: Apr 17, 1998
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