Disproportionate exposure to urban heat island intensity across major US cities.

Disproportionate exposure to urban heat island intensity across major US cities.
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在美国主要城市中,对城市热岛强度的暴露不成比例。

DOI:
10.1038/s41467-021-22799-5
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发表时间:
2021-05-25
影响因子:
16.6
通讯作者:
Manya D
Manya D
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Hsu A;Sheriff G;Chakraborty T;Manya D

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城市热应激对公众健康构成重大风险。个别城市的个案研究表明,热暴露,像其他环境压力,可能是不平等的收入群体之间的分布。然而,没有什么证据表明这种差异是否普遍存在。我们结合联合收割机表面城市热岛(SUHI)的数据,一个代理隔离城市的贡献,额外的热暴露在建筑环境中,与人口普查区级的人口数据,以回答这些问题的夏天,当热暴露可能是在最大值。我们发现,在美国大陆175个最大的城市化地区中,除了6个以外,有色人种的平均生活在SUHI强度高于非西班牙裔白人的人口普查区。生活在贫困线以下家庭的人与生活在贫困线两倍以上家庭的人的情况类似。个人暴露于高温与不利的健康和经济后果有关。在这里,作者表明,在美国大陆的几乎所有主要城市,有色人种和生活在贫困中的人都承受着城市高温暴露的不成比例的负担。
Urban heat stress poses a major risk to public health. Case studies of individual cities suggest that heat exposure, like other environmental stressors, may be unequally distributed across income groups. There is little evidence, however, as to whether such disparities are pervasive. We combine surface urban heat island (SUHI) data, a proxy for isolating the urban contribution to additional heat exposure in built environments, with census tract-level demographic data to answer these questions for summer days, when heat exposure is likely to be at a maximum. We find that the average person of color lives in a census tract with higher SUHI intensity than non-Hispanic whites in all but 6 of the 175 largest urbanized areas in the continental United States. A similar pattern emerges for people living in households below the poverty line relative to those at more than two times the poverty line. Individual exposure to heat is associated with adverse health and economic outcomes. Here, the authors show that people of color and people living in poverty bear a disproportionate burden of urban heat exposure in almost all major cities in the continental United States.
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