文章基本信息

标题：Cities Exacerbate Climate Warming
本地全文：下载
作者：Lahouari Bounoua ; Kurtis Thome ; Joseph Nigro 等
期刊名称：Urban Science
印刷版ISSN：2413-8851
出版年度：2021
卷号：5
期号：1
页码：27-35
DOI：10.3390/urbansci5010027
出版社：MDPI Publishing
摘要：Urbanization is a complex land transformation not explicitly resolved within large-scale climate models. Long-term timeseries of high-resolution satellite data are essential to characterize urbanization within land surface models and to assess its contribution to surface temperature changes. The potential for additional surface warming from urbanization-induced land use change is investigated and decoupled from that due to change in climate over the continental US using a decadal timescale. We show that, aggregated over the US, the summer mean urban-induced surface temperature increased by 0.15 °C, with a warming of 0.24 °C in cities built in vegetated areas and a cooling of 0.25 °C in cities built in non-vegetated arid areas. This temperature change is comparable in magnitude to the 0.13 °C/decade global warming trend observed over the last 50 years caused by increased CO2. We also show that the effect of urban-induced change on surface temperature is felt above and beyond that of the CO2 effect. Our results suggest that climate mitigation policies must consider urbanization feedback to put a limit on the worldwide mean temperature increase.
关键词：urbanization; surface temperature; land cover; NDVI; global warming; Landsat 8; MODIS; NLCD; NLDAS urbanization ; surface temperature ; land cover ; NDVI ; global warming ; Landsat 8 ; MODIS ; NLCD ; NLDAS