Present and projected future mean radiant temperature for three European cities

Sofia Thorsson, David Rayner, Fredrik Lindberg, Ana Monteiro, Lutz Katzschner, Kevin Ka Lun Lau, Sabrina Campe, Antje Katzschner, Janina Konarska, Shiho Onomura, Sara Velho, Björn Holmer

研究成果: Article査読

21 被引用数 (Scopus)

抄録

Present-day and projected future changes in mean radiant temperature, Tmrt in one northern, one mid-, and one southern European city (represented by Gothenburg, Frankfurt, and Porto), are presented, and the concept of hot spots is adopted. Air temperature, Ta, increased in all cities by 2100, but changes in solar radiation due to changes in cloudiness counterbalanced or exacerbated the effects on Tmrt. The number of days with high Tmrt in Gothenburg was relatively unchanged at the end of the century (+1 day), whereas it more than doubled in Frankfurt and tripled in Porto. The use of street trees to reduce daytime radiant heat load was analyzed using hot spots to identify where trees could be most beneficial. Hot spots, although varying in intensity and frequency, were generally confined to near sunlit southeast-southwest facing walls, in northeast corner of courtyards, and in open spaces in all three cities. By adding trees in these spaces, the radiant heat load can be reduced, especially in spaces with no or few trees. A set of design principles for reducing the radiant heat load is outlined based on these findings and existing literature.

本文言語English
ページ(範囲)1531-1543
ページ数13
ジャーナルInternational Journal of Biometeorology
61
9
DOI
出版ステータスPublished - 1 9月 2017

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