Climatological study about effect of ventilation by a large restoration of inner-city river

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  • Matsumoto Futoshi
    Institute for Human Science and Biomedical Engineering, National Institute of Advanced Industrial Science and Technology
  • Ichinose Toshiaki
    Social and Environmental Systems Division, National Institute for Environmental Studies
  • Shiraki Youhei
    Faculty of Geo-environmental Science, Rissho University
  • Lee Lyong-Tae
    Seoul Metropolitan Government

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Other Title
  • 都市内河川の大規模復元による「風の道」の効果に関する気候学的研究
  • 都市内河川の大規模復元による「風の道」の効果に関する気候学的研究--韓国ソウル市清渓川を事例として
  • トシナイ カセン ノ ダイキボ フクゲン ニ ヨル カゼ ノ ミチ ノ コウカ ニ カンスル キコウガクテキ ケンキュウ カンコク ソウルシ チョンゲチョン オ ジレイ ト シテ
  • ―韓国ソウル市清渓川を事例として―
  • —A case of Cheong-Gye Stream in Seoul, South Korea—

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Description

The objective of this study is to clarify the cooling effect by the ventilation after the restoration of the river in a inland city. The meteorological observations were carried out around the Cheong-Gye Stream in Seoul city in summer, 2006 (after the restoration process).<br> The main results are summarized as follows:<br> (1) When the wind from westward along the Cheong-Gye Stream is strong, the wind flows separating into the crossing avenues toward south and north. At the same time, it supplies decrease in temperature to the crossing avenues.<br> (2) The decrease in mean temperature in hourly is confirmed to reach around 60 m as max value from the restored zone. And it is supposed that the degree of decrease in temperature is about 0.3–0.4°C as the wind velocity increase 1 m/s.<br> Therefore it is confirmed that the decrease in temperature by the ventilation exists after the restoration of the Cheong-Gye Stream. Then it is considered that a large restoration of the inner-city river is able to be effective for urban development.<br>

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