Inter-annual variability in urban heat island intensity over 10 major cities in the United States
Inter-annual variability in urban heat island intensity over 10 major cities in the United States
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DOI：
10.1016/j.scs.2016.05.012
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发表时间：
2016-10
影响因子：
11.7
通讯作者：
P. Ramamurthy;Michael Sangobanwo
中科院分区：
文献类型：
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作者：
P. Ramamurthy;Michael Sangobanwo
城市热岛强度（UHI）已成为表征城市热环境的一个交叉商数。在这项研究中，我们使用公开的天气数据，从10个大都市中心位于美国的特点，每小时，季节和每年的变化，空气温度为基础的城市热岛。我们的研究结果表明，虽然有现象学上的相似性，城市热岛的原因和趋势，但它们的影响力在不同的城市是不同的顺序。在这里比较的城市，沿海和干旱城市在夏季表现出较高的日变化。在寒冷的季节，除了纽约市，其他城市的轮廓都比较平坦。我们的分析还表明，在极端炎热的日子在温暖的季节，城市热岛在大多数城市放大。位于沿着城市的城市热岛对海风高度敏感，总体上比内陆城市经历更多的极端高温日。
Urban heat island intensity (UHI) has become a cross-cutting quotient to characterize the thermal environment of urban areas. In this study, we use publicly available weather data from ten metropolitan centers located in US to characterize the hourly, seasonal and yearly variability in air temperature based UHI. Our results reveal that while there are phenomenological similarities on UHI causes and trends, their order of influence in different cities is however distinct. Of cities compared here the coastal and arid cities exhibited high diurnal variability during the summer months. During the cold season, except for New York City, other cities had a flatter profile. Our analysis also shows that during extreme heat days in the warm season, the UHI is amplified in most cities. The UHI of cities located along the coast was highly sensitive to sea breeze and in general experience more extreme heat days than the inland cities.