Estimation of the urban heat island for UK climate change projections
Estimation of the urban heat island for UK climate change projections
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DOI：
10.1177/0143624410365033
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发表时间：
2010-08-01
影响因子：
1.7
通讯作者：
Eames, M.
中科院分区：
文献类型：
--
作者：
Kershaw, T.;Sanderson, M.;Eames, M.
众所周知，城市对其当地气候有重大影响，并且通常比周围环境温暖。然而，气候模型通常不包括城市地区的代表，因此模型的气候预测可能会低估城市地区的温度。已经开发出一种简单的方法来根据一组网格温度数据计算城市热岛（UHI）；然后，UHI 可以添加到气候模型预测和天气数据文件中。这种方法允许按月计算城市热岛指数（UHI），并缩减至每小时计算以添加到天气生成器数据中。所产生的城市热岛强度与观测数据一致。 实际应用：科学界普遍认为地球气候正在变暖。除了气候变化的影响外，城市热岛效应还可使城市地区的气温显着升高，高于周围农村地区的气温。拟议的根据一组网格温度数据计算 UHI 的方法允许将 UHI 添加到气候模型预测（例如 UKCP09 或 HadRM3）和天气数据文件中。该方法还允许将 UHI 从月度值暂时缩减为每小时数据，以用于构建热模拟软件。
Cities are known to exert a significant influence on their local climate, and are generally warmer than their surroundings. However, climate models generally do not include a representation of urban areas, and so climate projections from models are likely to underestimate temperatures in urban areas. A simple methodology has been developed to calculate the urban heat island (UHI) from a set of gridded temperature data; the UHI may then be added to climate model projections and weather data files. This methodology allows the UHI to be calculated on a monthly basis and downscaled to hourly for addition to weather generator data. The UHI intensities produced are found to be consistent with observed data.Practical application: There is overwhelming consensus amongst the scientific community that the Earth's climate is warming. In addition to the effects of climate change the urban heat island ( UHI) effect can increase air temperatures significantly in urban areas above those of the rural areas around them. The proposed methodology for calculating the UHI from a set of gridded temperature data allows the UHI to be added to climate model projections such as UKCP09 or HadRM3 and weather data files. The methodology also allows for the temporal downscaling of the UHI from monthly values to hourly data for use in building thermal simulation software.