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

Itahashi, Syuichi; Yumimoto, Keiya; Uno, Itsushi; Hayami, Hiroshi; Fujita, Shin-ichi; Pan, Yuepeng; Wang, Yuesi

doi:https://doi.org/10.5194/acp-18-2835-2018

Articles | Volume 18, issue 4

https://doi.org/10.5194/acp-18-2835-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Global and regional assessment of intercontinental transport...

https://doi.org/10.5194/acp-18-2835-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 4

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, Keiya Yumimoto, Itsushi Uno, Hiroshi Hayami, Shin-ichi Fujita, Yuepeng Pan, and Yuesi Wang

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Final revised paper (published on 28 Feb 2018)
Preprint (discussion started on 16 Oct 2017)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC1: 'Comments to Syuichi Itahashi et al.', Anonymous Referee #2, 07 Nov 2017
- AC1: 'Reply to Anonymous Referee #2 by Syuichi ITAHASHI', Syuichi Itahashi, 05 Jan 2018
RC2: 'Review of acp-2017-848', Wenche Aas, 16 Nov 2017
- AC2: 'Response to Wenche Was by Syuichi ITAHASHI', Syuichi Itahashi, 05 Jan 2018

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Syuichi Itahashi on behalf of the Authors (05 Jan 2018) Author's response Manuscript

ED: Referee Nomination & Report Request started (09 Jan 2018) by Frank Dentener

RR by Wenche Aas (12 Jan 2018)

ED: Publish as is (22 Jan 2018) by Frank Dentener

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 NO_x / SO₂ emission ratio and the NO₂ / SO₂ column ratio in China. The results indicated that the acidity of precipitation shifted from sulfur to nitrogen.