Detailed characterization of the CAPS single-scattering albedo monitor (CAPS PMssa) as a field-deployable instrument for measuring aerosol light absorption with the extinction-minus-scattering method

Modini, Rob L.; Corbin, Joel C.; Brem, Benjamin T.; Irwin, Martin; Bertò, Michele; Pileci, Rosaria E.; Fetfatzis, Prodromos; Eleftheriadis, Kostas; Henzing, Bas; Moerman, Marcel M.; Liu, Fengshan; Müller, Thomas; Gysel-Beer, Martin

doi:https://doi.org/10.5194/amt-14-819-2021

Articles | Volume 14, issue 2

https://doi.org/10.5194/amt-14-819-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/amt-14-819-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 14, issue 2

Research article

|

03 Feb 2021

Research article |

| 03 Feb 2021

Detailed characterization of the CAPS single-scattering albedo monitor (CAPS PMssa) as a field-deployable instrument for measuring aerosol light absorption with the extinction-minus-scattering method

Rob L. Modini, Joel C. Corbin, Benjamin T. Brem, Martin Irwin, Michele Bertò, Rosaria E. Pileci, Prodromos Fetfatzis, Kostas Eleftheriadis, Bas Henzing, Marcel M. Moerman, Fengshan Liu, Thomas Müller, and Martin Gysel-Beer

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Final revised paper (published on 03 Feb 2021)
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Preprint (discussion started on 06 Aug 2020)
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Interactive discussion

Status: closed

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

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RC1: 'Review of AMT-2020-292', Timothy Onasch, 15 Sep 2020
- AC1: 'Author comments to both reviews', Robin Modini, 13 Nov 2020
RC2: 'Reviewer's comments', Anonymous Referee #2, 16 Sep 2020
- AC1: 'Author comments to both reviews', Robin Modini, 13 Nov 2020

Peer-review completion

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

AR by Robin Modini on behalf of the Authors (08 Dec 2020) Author's response Manuscript

ED: Publish as is (09 Dec 2020) by Mingjin Tang

AR by Robin Modini on behalf of the Authors (17 Dec 2020) Manuscript

Short summary

Extinction-minus-scattering is an important method for measuring aerosol light absorption, but its application in the field presents a number of challenges. A recently developed instrument based on this method – the CAPS PMssa – has the potential to overcome some of these challenges. We present a compilation of theory, lab measurements, and field examples to characterize this instrument and show the conditions under which it can deliver reliable absorption measurements for atmospheric aerosols.