Assessment of Heat island effect of traffic volume from space observations

Authors: Hongxing Liu*, University of Cincinnati, Bo Yang, University of Cincinnati, Emily Kang, University of Cincinnati
Topics: Remote Sensing, Urban Geography
Keywords: Urban heat island; traffic effect, thermal remote sensing; Beijing
Session Type: Paper
Day: 4/14/2018
Start / End Time: 8:00 AM / 9:40 AM
Room: Napoleon B3, Sheraton 3rd Floor
Presentation File: No File Uploaded

This research examines the effects of traffic volume on the urban heat island using time series satellite thermal observations. During the 2008 Summer Olympics Game, the total urban traffic volume for Beijing Metropolitan Area was approximately cut by 50% due to the “Odd and Even Car Ban (OECB)” policy. We employed daily MODIS thermal data to map surface temperature distributions for Beijing Metropolitan Area. The spatial extent and intensity of urban heat island during the Olympics Game, namely, with the traffic control, are compared with those time periods without the traffic control. A dummy variable based regression analysis has been utilized to evaluate the contribution of traffic volume to the urban heat. Our analysis suggests that the decrease in urban traffic volume can significantly reduce the spatial extent and intensity of the urban heat island. The “Odd and Even Car Ban (OECB)” policy is more effective for heat mitigation in inner city than in city outer rings and suburbs.

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