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    Please use this identifier to cite or link to this item: http://nccur.lib.nccu.edu.tw/handle/140.119/60796


    Title: Desert heat island study in winter by mobile transect and remote sensing techniques
    Authors: Sun,Chen-Yi;Brazel,Anthony J.;Chow,Winston T. L.;Hedquist,Brent C.;Prashad,Lela
    Contributors: 政大地政系
    Date: 2009-10
    Issue Date: 2013-09-13
    Abstract: 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.
    Relation: Theoretical and Applied Climatology, 98(3/4), 323-335
    Data Type: article
    Appears in Collections:[地政學系] 期刊論文

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