Disparities in PM<sub>2.5</sub> air pollution in the United States

doi:10.1126/science.aaz9353

GSTDTAP > 气候变化

DOI	10.1126/science.aaz9353
	Disparities in PM_2.5 air pollution in the United States
	Jonathan Colmer; Ian Hardman; Jay Shimshack; John Voorheis
	2020-07-31
发表期刊	Science
出版年	2020
英文摘要	Particulate air pollution in the contiguous United States has decreased considerably over recent decades, but where exactly has that progress been made? Colmer et al. analyzed 36 years of data and found that the spatial distribution of fine particulate matter concentrations has remained largely unchanged over that interval (see the Perspective by Ma). Although, fine particulate pollution levels have dropped overall, those areas that were most and least polluted in 1981 remain so today. We may have made important strides in pollution control, but we have been less successful in addressing disparities of exposure between communities. Science , this issue p. [575][1]; see also p. [503][2] Air pollution at any given time is unequally distributed across locations. Average concentrations of fine particulate matter smaller than 2.5 micrometers in diameter (PM2.5) have fallen over time. However, we do not know how the spatial distribution of PM2.5 has evolved. Here, we provide early evidence. We combine 36 years of PM2.5 concentrations measured over ~8.6 million grid cells with geographic, economic, and demographic data from ~65,000 U.S. census tracts. We show that differences in PM2.5 between more and less polluted areas declined substantially between 1981 and 2016. However, the most polluted census tracts in 1981 remained the most polluted in 2016. The least polluted census tracts in 1981 remained the least polluted in 2016. The most exposed subpopulations in 1981 remained the most exposed in 2016. Overall, absolute disparities have fallen, but relative disparities persist. [1]: /lookup/doi/10.1126/science.aaz9353 [2]: /lookup/doi/10.1126/science.abb0943
领域	气候变化 ; 资源环境
URL	查看原文
引用统计	被引频次：195[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/286874
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Jonathan Colmer,Ian Hardman,Jay Shimshack,et al. Disparities in PM_2.5 air pollution in the United States[J]. Science,2020.
APA	Jonathan Colmer,Ian Hardman,Jay Shimshack,&John Voorheis.(2020).Disparities in PM_2.5 air pollution in the United States.Science.
MLA	Jonathan Colmer,et al."Disparities in PM_2.5 air pollution in the United States".Science (2020).