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KMID : 1024520170260091023
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Journal of the Environmental Sciences
2017 Volume.26 No. 9 p.1023 ~ p.1029
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Spatial Distribution of Air Temperature during an Extreme Heat Period in Daegu Metropolitan Area in 2016
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Kim Ji-Hye
Kim Hae-Dong
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Abstract
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We studied the distribution of air temperature using the high density urban climate observation network data of Daegu. The observation system was established in February 2013. We used a total of 38 air temperature observation points (23 thermometers and 18 AWSs). From the distribution of monthly averaged air temperatures, air temperatures at the center of Daegu were higher than in the suburbs. The daily minimum air temperature was more than or equal to 25oC and the daily maximum air temperature was more than or equal to 35oC at the elementary school near the center of Daegu. Also, we compared the time elements, which are characterized by the diurnal variation of surface air temperature. The warming and cooling rates in rural areas were faster than in urban areas. This is mainly due to the difference in surface heat capacity. These results indicate the influence of urbanization on the formation of the daily minimum temperature in Daegu.
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KEYWORD
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Warming rate, Cooling rate, Heat capacity, Urbanization
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