Does the restoration of an inner-city stream in Seoul affect local climate?
Yeon-Hee Kim, National Institute of Meteorological Research, Seoul, South Korea; and H. J. Koo, K. R. Kim, B. C. Choi, and J. J. Baik Urban climate changes associated with the restoration of an inner-city stream in Seoul, Korea, are investigated using observational data. The stream, called the Cheonggye stream, which had been hidden and covered with cement/asphalt for 46 years, runs 5.8 km eastward through a central region of Seoul. Intensive observations were made in the stream area for a number of summertime periods before, during, and after the stream restoration to detect the effects of the stream on its nearby climate and to quantify them. It is found that after the stream restoration the near-surface temperature averaged over the stream area dropped by 0.4oC, with the largest local temperature drop being 0.9oC. The stream effect on air temperature is also evident in the temperature distribution along a street traversing the stream. In the daytime after the stream restoration, the
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