Tracking air pollution and CO2 emissions in 13,189 urban areas worldwide using large geospatial datasets.

IF 8.9 1区 地球科学 Q1 ENVIRONMENTAL SCIENCES
Communications Earth & Environment Pub Date : 2025-01-01 Epub Date: 2025-05-07 DOI:10.1038/s43247-025-02270-9
Soo-Yeon Kim, Gaige Hunter Kerr, Aaron van Donkelaar, Randall V Martin, J Jason West, Susan C Anenberg
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引用次数: 0

Abstract

Air pollution and climate change are urgent global concerns, with urban areas contributing heavily to both air pollutants and greenhouse gas emissions. Here we calculate fine particulate matter, nitrogen dioxide, and ozone concentrations and fossil-fuel carbon dioxide emissions per capita in 13,189 urban areas worldwide from 2005 to 2019 and analyze correlations between trends for these pollutants, leveraging recently-developed global datasets. Globally, we found significant increases in ozone (+6%) and small, non-significant changes in fine particulate matter (+0%), nitrogen dioxide (-1%), and fossil-fuel carbon dioxide emissions (+4%). Also, over 50% of urban areas showed positive correlations for all pollutant pairs, though results varied by global region. High-income countries with strong mitigation policies experienced decreases in all pollutants, while regions with rapid economic growth had overall increases. This study shows the impacts of urban environmental initiatives in different regions and provides insights for reducing air pollution and carbon dioxide emissions simultaneously.

利用大型地理空间数据集跟踪全球13189个城市地区的空气污染和二氧化碳排放。
空气污染和气候变化是全球迫切关注的问题,城市地区是空气污染物和温室气体排放的主要来源。在这里,我们利用最近开发的全球数据集,计算了2005年至2019年全球13189个城市地区的细颗粒物、二氧化氮、臭氧浓度和人均化石燃料二氧化碳排放量,并分析了这些污染物趋势之间的相关性。在全球范围内,我们发现臭氧显著增加(+6%),细颗粒物(+0%)、二氧化氮(-1%)和化石燃料二氧化碳排放(+4%)的变化不大,但不显著。此外,超过50%的城市地区对所有污染物都表现出正相关性,尽管结果因全球地区而异。实施强有力缓解政策的高收入国家所有污染物都有所减少,而经济快速增长的区域总体上有所增加。本研究显示了不同地区城市环境举措的影响,并为同时减少空气污染和二氧化碳排放提供了见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Communications Earth & Environment
Communications Earth & Environment Earth and Planetary Sciences-General Earth and Planetary Sciences
CiteScore
8.60
自引率
2.50%
发文量
269
审稿时长
26 weeks
期刊介绍: Communications Earth & Environment is an open access journal from Nature Portfolio publishing high-quality research, reviews and commentary in all areas of the Earth, environmental and planetary sciences. Research papers published by the journal represent significant advances that bring new insight to a specialized area in Earth science, planetary science or environmental science. Communications Earth & Environment has a 2-year impact factor of 7.9 (2022 Journal Citation Reports®). Articles published in the journal in 2022 were downloaded 1,412,858 times. Median time from submission to the first editorial decision is 8 days.
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