Department of Geography, School of Environment, Education & Development, The University of Manchester, Manchester, UK.
Department of Urban and Regional Planning and Geo-information Management, Faculty of Geo-Information Science and Earth Observation (ITC), University of Twente, Enschede, The Netherlands.
Int J Biometeorol. 2022 Feb;66(2):385-396. doi: 10.1007/s00484-020-02061-1. Epub 2021 Jan 6.
The Urban Heat Island effect has been the focus of several studies concerned with the effects of urbanisation on human and ecosystem health. Humidity, however, remains much less studied, although it is useful for characterising human thermal comfort, the Urban Dryness Island effect and vegetation development. Furthermore, variability in microscale climate due to differences in land cover is increasingly crucial for understanding urbanisation effects on the health and wellbeing of living organisms. We used regression analysis to investigate the spatial and temporal dynamics of temperature, humidity and heat index in the tropical African city of Kampala, Uganda. We gathered data during the wet to dry season transition from 22 locations that represent the wide range of urban morphological differences in Kampala. Our analysis showed that the advancement of the dry season increased variability of climate in Kampala and that the most built-up locations experienced the most profound seasonal changes in climate. This work stresses the need to account for water availability and humidity to improve our understanding of human and ecosystem health in cities.
城市热岛效应一直是多项研究的焦点，这些研究关注城市化对人类和生态系统健康的影响。然而，湿度的研究要少得多，尽管它对于描述人体热舒适度、城市干燥岛效应和植被发育很有用。此外，由于土地覆盖的差异，微尺度气候的可变性对于理解城市化对生物体健康和幸福的影响变得越来越重要。我们使用回归分析来研究乌干达热带城市坎帕拉的温度、湿度和热指数的时空动态。我们在从 22 个地点收集数据，这些地点代表了坎帕拉广泛的城市形态差异。我们的分析表明，旱季的推进增加了坎帕拉气候的可变性，而且建筑最密集的地区经历了最剧烈的季节性气候变化。这项工作强调了需要考虑水的可用性和湿度，以提高我们对城市中人类和生态系统健康的理解。
