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contributor authorLu, Jie
contributor authorArya, S. Pal
contributor authorSnyder, William H.
contributor authorLawson, Robert E.
date accessioned2017-06-09T14:06:25Z
date available2017-06-09T14:06:25Z
date copyright1997/10/01
date issued1997
identifier issn0894-8763
identifier otherams-12543.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4147894
description abstractAn extensive and systematic water-tank study was performed to simulate the urban heat island under a calm and stably stratified environment. The objective was to examine the mean-temperature field, mixing height, and heat-island intensity as functions of surface heating rates, heat-island sizes, and ambient temperature gradients. The scaling parameters for the temperature field associated with the heat-island plume are the diameter D, surface heating rate H0, and Brunt?Väisälä frequency N of the ambient stratification. The induced plume was turbulent, and the Froude number was found to be the most important similarity parameter. The differences between low- and high-aspect-ratio plumes are discussed, and simple theoretical models are proposed for low-aspect-ratio plumes. The experimental results generally confirm the theoretical predictions and agree reasonably well with field observations, in spite of several limitations of the laboratory simulation. The mean-temperature distributions are found to have a universal shape that is a function of location only. The results are described in two papers. In this paper, the temperature fields are described. Part II describes the velocity fields and develops analytical models that apply to low-aspect-ratio plumes.
publisherAmerican Meteorological Society
titleA Laboratory Study of the Urban Heat Island in a Calm and Stably Stratified Environment. Part I: Temperature Field
typeJournal Paper
journal volume36
journal issue10
journal titleJournal of Applied Meteorology
identifier doi10.1175/1520-0450(1997)036<1377:ALSOTU>2.0.CO;2
journal fristpage1377
journal lastpage1391
treeJournal of Applied Meteorology:;1997:;volume( 036 ):;issue: 010
contenttypeFulltext


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