Paper of the week
Krayenhoff, E.S., Moustaoui, M., Broadbent, A.M. et al. Diurnal interaction between urban expansion, climate change and adaptation in US cities. Nature Clim Change 8, 1097–1103 (2018). https://doi.org/10.1038/s41558-018-0320-9
The paper mainly showed the impact of the implementation of cool roofs, evaporative roofs, street trees or low thermal admittance materials, or full adaptation to climate change, urban expansion or densification. The individual urban adaptation strategies provide a fraction of the cooling required to offset urban warming based on projections of climate change or nocturnal urban expansion. However, urban warming and adaptation cooling are strongly controlled by meteorology, including wind, cloud and precipitation, and hence vary regionally, seasonally and annually. Urban planner should consider the wind way when expanding urban area rather than using water and tree for cooling. Full adaptation strategy and releasing the densified area need to overcome several limitations, including persuading residents, estimating economic values and so on. Cool roofs seems realistic adaptation strategy in urbandensified area.
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