A preliminary study on the local cool-island intensity of Taipei city parks

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Title:	A preliminary study on the local cool-island intensity of Taipei city parks
Authors:	Chang, Chi-Ru Li, Ming-Huang Chang, Shyh-Dean
Contributors:	景觀系
Keywords:	urban heat island urban green-space design urban green-space planning sustainable cities
Date:	2007
Issue Date:	2009-11-13 14:51:08 (UTC+8)
Abstract:	That green-spaces relieve urban heat is well known in urban landscape planning. Scientific information on what kinds of green-spaces best reduce heat, however, is still largely unknown. This is a preliminary study aimed at (1) devising a method to detect and compare the local cool-island intensities of various urban parks; (2) verifying that this local cool-island intensity differs among parks; (3) determining whether this local cool-island intensity is related to park characteristics. Results from air-temperature measurements in and around 61 Taipei city parks showed that urban parks were on average cooler than their surroundings, confirming the term "urban cool-islands." However, approximately one-fifth of the parks were warmer than their urban surroundings. At noon in summer, parks with >= 50% paved coverage and little tree- and shrub-cover were on average warmer than their surroundings. Large parks were on average cooler than the smaller ones, but this relationship was non-linear. In Taipei, parks differed in their local cool-island intensity and this intensity can be related to park characteristics. Before further details concerning better planning and design approaches to mitigate urban heat-islands can be addressed, a neighborhood-scaled understanding of the urban microclimate is first needed as a basis. (C) 2006 Elsevier B.V. All rights reserved.
Relation:	LANDSCAPE AND URBAN PLANNING Volume: 80 Issue: 4 Pages: 386-395
Appears in Collections:	[Department of Landscape Architecture & Graduate Institute of Landscape Architecture ] journal articles

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