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    题名: Desert heat island study in winter by mobile transect and remote sensing techniques
    作者: Sun,Chen-Yi;Brazel,Anthony J.;Chow,Winston T. L.;Hedquist,Brent C.;Prashad,Lela
    贡献者: 政大地政系
    日期: 2009-10
    上传时间: 2013-09-13
    摘要: A familiar problem in urban environments is the urban heat island (UHI), which potentially increases air conditioning demands, raise pollution levels, and could modify precipitation patterns. The magnitude and pattern of UHI effects have been major concerns of a lot of urban environment studies. Typically, research on UHI magnitudes in arid regions (such as Phoenix, AZ, USA) focuses on summer. UHI magnitudes in Phoenix (more than three million population) attain values in excess of 5°C. This study investigated the early winter period—a time when summer potential evapotranspiration >250 mm has diminished to <90 mm. An analysis of the winter magnitude of the heat island in Phoenix has been studied very little, and therefore with the aid of automobile transects, fixed stations, and remote sensing techniques, we investigated a portion of the large Phoenix metropolitan area known as the East Valley. The eastern fringes of the metropolitan area abut against breaks in sloping terrain. The highest UHI intensity observed was >8.0°C, comparable to summertime UHI conditions. Through analysis of the Oke (1998) weather factor ΦW, it was determined thermally induced nighttime cool drainage winds could account for inflating the UHI magnitude in winter.
    關聯: Theoretical and Applied Climatology, 98(3/4), 323-335
    数据类型: article
    显示于类别:[地政學系] 期刊論文

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