Significant Decrease in Wet Deposition of Anthropogenic Chloride Across the Eastern United States, 1998–2018
Significant Decrease in Wet Deposition of Anthropogenic Chloride Across the Eastern United States, 1998–2018
复制标题
1998 年至 2018 年美国东部人为氯化物湿沉积显着减少
DOI:
10.1029/2020gl090195
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发表时间:
2020
影响因子:
5.2
通讯作者:
Thornton, Joel A.
中科院分区:
文献类型:
--
作者:
Haskins, Jessica D.;Jaeglé, Lyatt;Thornton, Joel A.
Using deposition observations from precipitation samples collected by the National Atmospheric Deposition Program at 125 sites across the United States, we show that the mean wet deposition flux of non‐sea‐salt chloride (NSS Cl−) has decreased by 83% throughout the eastern United States between 1998 and 2018. We find that 30% of the sites switch from having excess Cl−to being depleted in Cl−. We attribute the observed decreases in NSS Cl−deposition to a 95% decrease in U.S. anthropogenic HCl emissions since 1998. We propose that industry emission controls that remove HCl as a cobenefit of NOxand SO2have caused significant decreases in NSS Cl−deposition throughout the eastern United States, in addition to shifts from coal to natural gas and to coal with lower Cl−content. Our analysis implies that the lower tropospheric reactive inorganic chlorine burden was larger over the United States in the past than it is today.
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影响因子:
11.4
作者:
Evans, Chris D.;Monteith, Don T.;Brayshaw, Susan
通讯作者:
Brayshaw, Susan
影响因子:
4
作者:
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影响因子:
5
作者:
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影响因子:
6.3
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Xuan Wang;D. Jacob;S. Eastham;M. Sulprizio;Lei Zhu;Qianjie Chen;B. Alexander;T. Sherwen;M. Ev
通讯作者:
Xuan Wang;D. Jacob;S. Eastham;M. Sulprizio;Lei Zhu;Qianjie Chen;B. Alexander;T. Sherwen;M. Ev
影响因子:
6.3
作者:
T. Sherwen;J. Schmidt;M. Evans;L. Carpenter;K. Grossmann;S. Eastham;D. Jacob;B. Dix;T. Koenig;R. Sinreich;I. Ortega;R. Volkamer;A. Saiz‐Lopez;C. Prados-Román;A. Mahajan;C. Ordóñez
通讯作者:
T. Sherwen;J. Schmidt;M. Evans;L. Carpenter;K. Grossmann;S. Eastham;D. Jacob;B. Dix;T. Koenig;R. Sinreich;I. Ortega;R. Volkamer;A. Saiz‐Lopez;C. Prados-Román;A. Mahajan;C. Ordóñez