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ID 15359
file
title alternative
Effect of urbanization in a coastal region on sea breeze and urban thermal environment
creator
川又 孝太郎
玉井 信行
subject
heat island
land use
thermal environment
sea breeze
urban climate model
NDC
Construction. Civil engineering
abstract
Effect of land use development in a coastal region on heat island phenomenon is studied numerically by an urban climate model that employs the k-e turbulence model and an eddy diffusivity model for the transport of momentum, temperature and moisture in the Eckman layer together with a heat balance model for the surface boundary layer and the soil layer. Numerical simulations are carried out for a simplified terrain which consists of sea and land. Changes in wind velocity, temperature and heat fluxes are discussed for three types of land use, that is land surfaces are 1) covered by grass, 2) urbanized as residential area and 3) further developed in a coastal region as business center. It is clarified in the urbanized area that decrease of latent heat flux and increase of sensible heat flux at urban surface raise temperature in the daytime. Urban canopy intensifies sensible heat transfer, leading to higher air temperature. Sea breeze is blocked by the increased roughness in urbanized zone, resulting in the reduced cooling effect of sea breeze.
journal title
環境システム研究
volume
Volume 22
start page
274
end page
279
date of issued
1994-08
publisher
土木学会
date of created
1994
issn
0915-0390
ncid
language
jpn
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
Copyright (c) 1994 土木学会
department
Graduate School of Engineering