Composition and mixing state of atmospheric aerosols determined by electron microscopy: method development and application to aged Saharan dust deposition in the Caribbean boundary layer

Kandler, Konrad; Schneiders, Kilian; Ebert, Martin; Hartmann, Markus; Weinbruch, Stephan; Prass, Maria; Pöhlker, Christopher

doi:https://doi.org/10.5194/acp-18-13429-2018

Articles | Volume 18, issue 18

https://doi.org/10.5194/acp-18-13429-2018

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

Special issue:

The Saharan Aerosol Long-range Transport and Aerosol-Cloud-interaction...

https://doi.org/10.5194/acp-18-13429-2018

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

Articles | Volume 18, issue 18

Research article

|

21 Sep 2018

Research article |

| 21 Sep 2018

Composition and mixing state of atmospheric aerosols determined by electron microscopy: method development and application to aged Saharan dust deposition in the Caribbean boundary layer

Konrad Kandler, Kilian Schneiders, Martin Ebert, Markus Hartmann, Stephan Weinbruch, Maria Prass, and Christopher Pöhlker

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

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RC1: 'Peer-review', Anonymous Referee #1, 04 Jun 2018
- AC1: 'Answer to the reviews and description of changes', Konrad Kandler, 30 Aug 2018
RC2: 'Comments on MS acp-2018-417 by Kandler et al.', Anonymous Referee #2, 19 Jun 2018
- AC1: 'Answer to the reviews and description of changes', Konrad Kandler, 30 Aug 2018
AC1: 'Answer to the reviews and description of changes', Konrad Kandler, 30 Aug 2018

Peer-review completion

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

AR by Konrad Kandler on behalf of the Authors (30 Aug 2018) Author's response

ED: Publish as is (04 Sep 2018) by Joshua Schwarz

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Short summary

Aging of transported Saharan dust in the Caribbean was observed by electron microscopy, yielding size, chemical composition and mixing state for each individual particle. Models were developed for assessing mixing relevant for the atmosphere. Particles become internally mixed with sulfate during transport and sea salt in the Caribbean boundary layer. The mixing increases deposition velocity and dust cloud activation, and thus may impact on radiative and cloud nucleating properties.