Numerical study on the effect of buildings on temperature variation in urban and suburban areas in Tokyo

被引:13
|
作者
Tokairin, Takayuki
Kondo, Hiroaki
Yoshikado, Hiroshi
Genchi, Yutaka
Ihara, Tomohiko
Kikegawa, Yukihiro
Hirano, Yujiro
Asahi, Kazutake
机构
[1] Natl Inst AIST, Tsukuba, Ibaraki, Japan
[2] Meisei Univ, Tokyo, Japan
[3] Gunma Univ, Kiryu, Gumma 376, Japan
[4] Mizuho Informat & Res Inst Inc, Tokyo, Japan
关键词
D O I
10.2151/jmsj.84.921
中图分类号
P4 [大气科学(气象学)];
学科分类号
0706 ; 070601 ;
摘要
A numerical investigation of the temperature variation in urban and suburban areas due to the presence of buildings was carried out using a one-dimensional canopy model combined with a meso-scale meteorological model. Since temperature increases in an urban area are caused by sensible heat from building surfaces besides anthropogenic heat and reduction of wind speed due to buildings' drag, we estimated each cause separately to determine the contribution by each to the temperature variation. The simulation was performed for. Kanda, an urban area, and for Nerima, a suburban area of Tokyo. Comparisons were made with actual temperatures before the estimation. The comparison indicated that the measured temperatures in the Kanda and Nerima areas were nearly reproduced by the model. The sensitivity analysis indicated that, in a comparison with the temperature in no building environment, the contribution of (i) sensible heat flux from building surfaces to temperature rise was 49% in Kanda and 20% in Nerima, (ii) wind reduction due to drag was 41% in Kanda and 59% in Nerima, and (iii) the effect of the interaction between (I) and (II) was +10% in Kanda and +20% in Nerima.
引用
收藏
页码:921 / 937
页数:17
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