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

Atmos. Meas. Tech., 14, 819–851, 2021

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

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

Atmos. Meas. Tech., 14, 819–851, 2021

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 et al.

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Final revised paper (published on 03 Feb 2021)
Supplement to the final revised paper
Preprint (discussion started on 06 Aug 2020)
Supplement to the preprint

Interactive discussion

Status: closed

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

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- Supplement

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

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.