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KMID : 1024520160250111475
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Journal of the Environmental Sciences
2016 Volume.25 No. 11 p.1475 ~ p.1484
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Analyzing the Cooling Effect of Urban Green Areas by Using the Multiple Observation Network in the Seonjeongneung Region of Seoul, Korea
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Kim Geun-Hoi
Lee Young-Gon
Lee Dae-Geun
Kim Baek-Jo
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Abstract
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To analyze the cooling effect of urban green areas, we conducted micrometeorological measurements in these areas and their surroundings in Seoul, Korea. From the average hourly temperature measurements through each month for the last two years (March 2013 to February 2015), we found that the maximum temperature difference between urban and green areas was about 2.9℃ at 16:00 LST in summer, and the minimum was about 1.7℃ at 22:00 LST in winter. In summer, the temperature difference was the largest during the day, rather than at night, due mainly to shading by the tree canopy. The specific humidity difference between the two areas was about 1.5 g kg-1 in summer, and this decreased in the winter. The specific humidity difference between urban and green areas in summer is relatively large during the day, due to the higher evapotranspiration level of biologically active plants.
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KEYWORD
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Urban park, Heat island, Cooling effect, Evapotranspiration
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