Articles | Volume 18, issue 4
Atmos. Chem. Phys., 18, 2835–2852, 2018
https://doi.org/10.5194/acp-18-2835-2018

Special issue: Global and regional assessment of intercontinental transport...

Atmos. Chem. Phys., 18, 2835–2852, 2018
https://doi.org/10.5194/acp-18-2835-2018

Research article 28 Feb 2018

Research article | 28 Feb 2018

A 15-year record (2001–2015) of the ratio of nitrate to non-sea-salt sulfate in precipitation over East Asia

Syuichi Itahashi et al.

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Latest update: 23 Oct 2021
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Short summary
Ground-based observations of precipitation chemistry over China, Korea, and Japan from 2001 to 2015 were compiled, and the ratio of nitrate to non-sea-salt sulfate concentration in precipitation was analyzed to identify the long-term record of acidifying species. The variations in the ratio in East Asia corresponded to the NOx / SO2 emission ratio and the NO2 / SO2 column ratio in China. The results indicated that the acidity of precipitation shifted from sulfur to nitrogen.
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