Satellite evidence of substantial rain-induced soil emissions of ammonia across the Sahel

Hickman, Jonathan E.; Dammers, Enrico; Galy-Lacaux, Corinne; van der Werf, Guido R.

doi:https://doi.org/10.5194/acp-18-16713-2018

Articles | Volume 18, issue 22

https://doi.org/10.5194/acp-18-16713-2018

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

https://doi.org/10.5194/acp-18-16713-2018

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

Articles | Volume 18, issue 22

Research article

|

27 Nov 2018

Research article |

| 27 Nov 2018

Satellite evidence of substantial rain-induced soil emissions of ammonia across the Sahel

Jonathan E. Hickman, Enrico Dammers, Corinne Galy-Lacaux, and Guido R. van der Werf

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Final revised paper (published on 27 Nov 2018)
Supplement to the final revised paper
Preprint (discussion started on 09 Jul 2018)

Interactive discussion

Status: closed

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

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AC1: 'Added acknowledgement', Jonathan Hickman, 01 Aug 2018
RC1: 'anonymous referee comment', Anonymous Referee #1, 02 Aug 2018
RC2: 'Review of "Satellite evidence of substantial rain-induced soil emissions of ammonia across the Sahel"', Anonymous Referee #2, 06 Aug 2018

Peer-review completion

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

AR by Jonathan Hickman on behalf of the Authors (16 Oct 2018) Author's response Manuscript

ED: Referee Nomination & Report Request started (17 Oct 2018) by Jennifer G. Murphy

RR by Anonymous Referee #1 (30 Oct 2018)

ED: Publish subject to technical corrections (30 Oct 2018) by Jennifer G. Murphy

AR by Jonathan Hickman on behalf of the Authors (13 Nov 2018) Author's response Manuscript

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Short summary

Ammonia gas, which contributes to air pollution, is emitted from soils and combustion. In regions with distinct dry and rainy seasons, the first rainfall events each year trigger biogeochemical activity in soils. We used satellite observations of the atmosphere over the African Sahel savanna ecosystem to show that increases in soil moisture at the onset of the rainy season are responsible for large pulsed emissions of ammonia equal to roughly a fifth of annual ammonia emissions from the region