A Study on the change of factors effecting on the thermal and wind environment between Meiji period and today

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  • 明治初期と現代における地上付近の熱・風環境を規定する要因の変化に関する研究
  • 明治初期と現代における地上付近の熱・風環境を規定する要因の変化に関する研究 : 東京都心部を対象として
  • メイジ ショキ ト ゲンダイ ニ オケル チ ジョウフキン ノ ネツ ・ カゼ カンキョウ オ キテイ スル ヨウイン ノ ヘンカ ニ カンスル ケンキュウ : トウキョウ トシンブ オ タイショウ ト シテ
  • A Case Study of Central Tokyo Metropolitan Area
  • 東京都心部を対象として

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Abstract

In this research, we statistically clarified the factors that determine the thermal and wind environment of two periods: Meiji Period and Today. Three factors were clarified to effect on the temperature near to the ground; (1) micro topography and land cover, (2) adjacency of each unit, and (3) exchange of heat between upper boundary layer and canopy layer. It was clarified that micro topography and land cover had the most dominant influence on the temperature among these three factors in Meiji Period. However, the effect of the micro topography was weakened today and the distribution of high rise buildings influenced on the thermal environment in various scales. As a result, the effective indicators were obtained that were related to the hierarchical urban climate layer.

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