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The relationship between height to width ratios and the heat island intensity at 22:00 h for Singapore
Author(s) -
Goh Kim Chuan,
Chang Chew Hung
Publication year - 1999
Publication title -
international journal of climatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.58
H-Index - 166
eISSN - 1097-0088
pISSN - 0899-8418
DOI - 10.1002/(sici)1097-0088(199907)19:9<1011::aid-joc411>3.0.co;2-u
Subject(s) - urban heat island , intensity (physics) , climatology , atmospheric sciences , environmental science , correlation coefficient , temperate climate , street canyon , meteorology , canyon , geography , mathematics , physics , geology , cartography , statistics , botany , quantum mechanics , biology
The statistical relationship between urban canyon height‐to‐width ( H / W ) ratios and nocturnal heat island intensities for public housing estates in Singapore has been examined. Although a number of similar studies have been conducted for temperate cities, this is a first attempt at correlating H / W to heat island intensities for a tropical city. Heat island intensities were examined specifically at 22:00 h because a previous study of Singapore's heat island determined that the heat islands were well developed by that time. A total of 17 Housing Development Board (HDB) estates were studied and at least two vehicle traverses were conducted for each estate on nights with a few days of antecedent dry weather conditions. H / W ratios for each estate were tabulated by proportion of building length. The statistical analysis demonstrates that there is a positive relationship between the heat island intensities and the median H / W , such that Δ T u−r(max) =0.952 (median H / W )−0.021, statistically significant at α=0.05 with a p ‐value of 0.001 and a correlation coefficient of 0.53. Copyright © 1999 Royal Meteorological Society