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Modelling the spatiotemporal change of canopy urban heat islands

机译：模拟冠层城市热岛的时空变化

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This study models the spatiotemporal change of Birmingham's urban heat island (UHI) using air temperature measurements made during the HiTemp project to study the atmospheric conditions over the city [1]. The study identifies the causative factors and their contributions to the formation of UHI, based on a number of data used to build 2.5 D model; land cover, land use, geometrical factors and shadow layers. The raw air temperature measurements were filtered, georeferenced and interpolated to create maps of temperature variations. The expected influencing parameters on the development of the UHI were derived and prepared for regression modelling. The results showed that the difference in temperature across Birmingham city through two years of ground measurements (June 2012 June 2014) reached up to 13.53 degrees C. The UHI's appeared daytime and night-time throughout the different seasons for approximately 56% of the total hours during the study period. However, the high intensity events happened during the calm and clear nights. Moreover, buildings' shadow provided up to 2 degrees C reduction to the air temperature, while the wind speed and direction are responsible for the size and distribution of hot spots. The built up area contributed to. increase the UHI, whereas, the other types of land cover and the geometrical parameters, contributed less. (C) 2016 Elsevier Ltd. All rights reserved.
机译：本研究使用HiTemp项目期间进行的气温测量来研究伯明翰城市热岛（UHI）的时空变化，以研究城市的大气条件[1]。该研究基于用于建立2.5 D模型的大量数据，确定了致病因素及其对UHI形成的贡献；土地覆盖，土地利用，几何因素和阴影层。对原始空气温度测量值进行滤波，地理参考和内插以创建温度变化图。得出了对UHI发展的预期影响参数，并准备进行回归建模。结果表明，通过两年的地面测量（2012年6月，2012年6月），伯明翰市的温度差异达到了13.53摄氏度。UHI在不同季节的白天和黑夜出现，约占总时数的56％在学习期间。但是，高强度的事件发生在平静而晴朗的夜晚。此外，建筑物的阴影使空气温度降低了2摄氏度，而风速和风向则决定了热点的大小和分布。建筑面积增加了。增加UHI，而其他类型的土地覆盖和几何参数贡献较小。 （C）2016 Elsevier Ltd.保留所有权利。

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