COMPARISON OF HEAT BALANCE MECHANISMS IN TYPICAL SUMMER DAYS AT CENTRAL PARTS OF THREE PACIFIC CITIES, TOKYO, SENDAI AND HARAMACHI : (Part 1) Evaluation of regional characteristics of heat island based on climatic analysis

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  • 海風が卓越する夏季晴天日における規模の異なる3つの太平洋沿岸都市,東京,仙台,原町の中心部の大気部熱収支構造の比較 : 気候数値解析に基づく都市気候の地域特性の定量化(その1)
  • カイフウ ガ タクエツ スル カキ セイテンビ ニ オケル キボ ノ コトナル 3ツ ノ タイヘイヨウ エンガン トシ トウキョウ センダイ ハラマチ ノ チュウシンブ ノ タイキブ ネツ シュウシ コウゾウ ノ ヒカク キコウ スウチ カイセキ ニ モトヅク トシ キコウ ノ チイキ トクセイ ノ テイリョウカ ソノ 1
  • Comparison of Heat Balance Mechanisms in Typical Summer Days at Central Parts of Three Pacific Cities, Tokyo, Sendai and Haramachi (Part1)

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Abstract

The purpose of this study is to examine the regional characteristics on urban climate. CFD analyses of mesoscale climates of Tokyo metropolis, Sendai city and Haramachi city were carried out. All these three cites are faced to the Pacific Ocean but there exit several factors causing the different regional characteristics of urban climates of three cities, i.e. the size of urbanized area, the building density, the conditions of land-use and artificial heat release, etc. The influence of the regional characteristics on the urban climates was examined based on the results of climatic analyses by considering the heat balance in total urban space. In the center parts of Sendai and Haramachi, it was revealed that the effects of sea breeze are very large compared to the effects of artificial heat releases. In the center of Tokyo, the contribution of sea breeze was also large, but the contribution of artificial heat release was also relatively large compared to other two local cities.

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