Ammonium Chloride Associated Aerosol Liquid Water Enhances Haze in Delhi, India.
Ammonium Chloride Associated Aerosol Liquid Water Enhances Haze in Delhi, India.
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DOI：
10.1021/acs.est.2c00650
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发表时间：
2022-06-07
影响因子：
11.4
通讯作者：
Liu, Pengfei
中科院分区：
文献类型：
--
作者：
Chen, Ying;Wang, Yu;Nenes, Athanasios;Wild, Oliver;Song, Shaojie;Hu, Dawei;Liu, Dantong;He, Jianjun;Ruiz, Lea Hildebrandt;Apte, Joshua S.;Gunthe, Sachin S.;Liu, Pengfei
关键词：
水汽和大气气溶胶之间的相互作用导致气溶胶水分含量的增加，这促进了雾霾的发展，但在污染的城市环境中，其浓度、来源和影响在很大程度上仍然未知。在这里，我们展示了印度首都德里，它是污染最严重的首都城市，也经历了迄今为止全球报告的最高气溶胶水位。这种高气溶胶的水促进了气溶胶的二次形成，并加剧了空气污染。我们报告说，严重的污染事件通常与高气溶胶水有关，这会增强光散射，使能见度降低70%。强烈的光散射也抑制了德里冬季早晨的边界层高度，抑制了污染物的扩散，进一步加剧了上午的污染高峰。我们提供的证据表明，氯化铵是德里气溶胶水的最大贡献者，平均占40%，我们强调，在缓解战略中应考虑对含氯前体的监管。这项研究强调了氯化铵通过气溶胶水分含量在提高德里空气污染中的作用，使我们能够提出适当的缓解策略。
The interaction between water vapor and atmospheric aerosol leads to enhancement in aerosol water content, which facilitates haze development, but its concentrations, sources, and impacts remain largely unknown in polluted urban environments. Here, we show that the Indian capital, Delhi, which tops the list of polluted capital cities, also experiences the highest aerosol water yet reported worldwide. This high aerosol water promotes secondary formation of aerosols and worsens air pollution. We report that severe pollution events are commonly associated with high aerosol water which enhances light scattering and reduces visibility by 70%. Strong light scattering also suppresses the boundary layer height on winter mornings in Delhi, inhibiting dispersal of pollutants and further exacerbating morning pollution peaks. We provide evidence that ammonium chloride is the largest contributor to aerosol water in Delhi, making up 40% on average, and we highlight that regulation of chlorine-containing precursors should be considered in mitigation strategies. This research highlights the role of ammonium chloride in enhancing air pollution in Delhi through aerosol water content, allowing us to suggest suitable mitigation strategies.
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影响因子：
6.3
作者：
Bhandari, Sahil;Gani, Shahzad;Hildebrandt Ruiz, Lea
通讯作者：
Hildebrandt Ruiz, Lea
DOI：
10.1073/pnas.1900888116
发表时间：
2019-05-28
影响因子：
11.1
作者：
Chowdhury, Sourangsu;Dey, Sagnik;Di Girolamo, Larry
通讯作者：
Di Girolamo, Larry
影响因子：
6.3
作者：
Bertram, T. H.;Thornton, J. A.
通讯作者：
Thornton, J. A.
基于吸湿性测量的华北平原高相对湿度气溶胶液态水含量研究
影响因子：
6.3
作者：
Bian, Y. X.;Zhao, C. S.;Xu, W. Y.
通讯作者：
Xu, W. Y.
影响因子：
6.3
作者：
Gani, Shahzad;Bhandari, Sahil;Apte, Joshua S.
通讯作者：
Apte, Joshua S.