熱収支モデルによる東京圏の熱環境解析

Assessment of thermal environment in Tokyo area using an energy budget model

川又 孝太郎

Kawahara Yoshihisa

玉井 信行

環境システム研究

An energy budget model is developed to quantify the effects of the energy consumption and land conver on the surface air temperature in Tokyo metropolitan area. The model has several factors such as albedo, relative humidity, roughness height, heat capacity, and thermal diffusivity which take the values depending on the land use. The distribution and diurnal variation of anthropogenic heat release rate are given based on the limited data available.The simulated surface air temperature by the present model agrees favorably with the two set of AMeDAS data observed in mid-summer and winter with weak general wind. The analysis of heat transport process for each land use has shown that the air temperaature in urban areas increases due to the decrease in humidity, particularly in daytime. It is also shown that the increase of energy consumption enhances the air temperature level through the intensification of turbulent diffusion process.

heat island

land use

anthropogenic heat

thermal environment

heat budget model

Construction. Civil engineering [ 510 ]

jpn

土木学会

Copyright (c) 1992 土木学会

[ISSN] 0915-0390

[NCID] AN10518148