Urban heat island modelling of a tropical city: case of Kuala Lumpur
Urban heat island modelling of a tropical city: case of Kuala Lumpur
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DOI：
10.1186/s40562-019-0134-2
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发表时间：
2019-04-23
影响因子：
4
通讯作者：
Malki-Epshtein, Liora
中科院分区：
文献类型：
--
作者：
Wang, Kai;Aktas, Yasemin D.;Malki-Epshtein, Liora
城市人口的急剧增加导致城市的空间范围在横向和纵向上都在扩大。城市地区的气候反应与暴露于相同环境条件下的农村地区大不相同，城市温度一般较高，特别是在傍晚和晚上。再加上全球气温上升的趋势，城市供暖可被归类为一种影响到一些国家很大一部分人口的大气危害，需要通过地方和国家政府的规划战略加以解决。本研究提出了初步的调查结果，从城市规模的城市气候模型开发的快速气候建模工具ADMS-Urban的城市吉隆坡，马来西亚，这是已知的遭受大量的城市加热，并讨论了城市热岛效应的程度和强度，根据现有的文献实地测量。该模型的配置是使用从土地使用数据得出的地表特征数据作为输入，通过与从卫星图像得出的温度变化进行比较，可以看出该模型清楚地反映了整个区域的温度空间变化。用该模型预测的城市热岛强度与文献报道值相当。这项研究还表明，温度和风速之间的密切关系，这是一般低得多，在热带吉隆坡相比，中纬度地区，城市热岛强度和夜间冷却。未来的模拟研究应考虑人为加热，例如空调机组和交通，这是热带地区的重要热源，并更多地扩展建筑材料和形态，以彻底评估吉隆坡的城市供暖。
The steep increase in urban populations results in the spatial extent of cities expanding both horizontally and vertically. The climatic response of urban areas differs greatly to rural areas exposed to the same environmental conditions, with urban temperatures generally being higher, particularly in the late afternoon and evening. Coupled with the upward trend in global temperatures, urban heating can be classified as an atmospheric hazard that affects a high proportion of the population in some countries, which needs to be addressed through local and national government planning strategies. This study presents preliminary findings from a city scale urban climate model developed using the fast climate modelling tool ADMS-Urban for the city of Kuala Lumpur, Malaysia, which is known to suffer from substantial urban heating, and discusses the extent and intensity of the urban heat island in light of existing literature based on field measurements. The model has been configured to use surface characteristic data derived from land-use data as input, and through comparison with temperature variations derived from satellite imagery, the model is seen to clearly capture the spatial variation of temperature over the domain. The urban heat island intensi-ties predicted by the model are comparable to the values reported in literature. This study also demonstrates the strong relationship between temperatures and wind speed, which is generally much lower in tropical Kuala Lumpur compared to mid-latitudes, and the urban heat island intensity and nocturnal cooling. The future modelling studies should account for anthropogenic heating, for instance, from air conditioning units and traffic, which are important sources of heat in tropical areas, and expand more on building materials and morphology for a thorough appraisal of urban heating in Kuala Lumpur.