Dry versus wet marine particle optical properties: RH dependence of depolarization ratio, backscatter, and extinction from multiwavelength lidar measurements during SALTRACE

Haarig, Moritz; Ansmann, Albert; Gasteiger, Josef; Kandler, Konrad; Althausen, Dietrich; Baars, Holger; Radenz, Martin; Farrell, David A.

doi:https://doi.org/10.5194/acp-17-14199-2017

Articles | Volume 17, issue 23

https://doi.org/10.5194/acp-17-14199-2017

© Author(s) 2017. 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-17-14199-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 17, issue 23

Research article

|

30 Nov 2017

Research article |

| 30 Nov 2017

Dry versus wet marine particle optical properties: RH dependence of depolarization ratio, backscatter, and extinction from multiwavelength lidar measurements during SALTRACE

Moritz Haarig, Albert Ansmann, Josef Gasteiger, Konrad Kandler, Dietrich Althausen, Holger Baars, Martin Radenz, and David A. Farrell

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Final revised paper (published on 30 Nov 2017)
Preprint (discussion started on 19 Jun 2017)

Interactive discussion

Status: closed

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

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RC1: 'Review for: Dry versus wet marine particle optical properties: RH dependence of depolarization ratio, backscatter and extinction from multiwavelength lidar measurements during SALTRACE “', Anonymous Referee #1, 27 Jun 2017
- AC1: 'Letter of Reply to Referee #1', Moritz Haarig, 23 Sep 2017
RC2: 'review of Haarig et al., Dry versus wet marine particle optical properties', Anonymous Referee #2, 07 Jul 2017
- AC2: 'Letter of Reply to Referee #2', Moritz Haarig, 23 Sep 2017
RC3: 'Review of Dry versus wet marine particle optical properties: RH dependence of depolarization ratio, backscatter and extinction from multiwavelength lidar measurements during SALTRACE by Haarig et al.', Anonymous Referee #3, 17 Jul 2017
- AC3: 'Letter of Reply to Referee #3', Moritz Haarig, 23 Sep 2017
SC1: 'Comment on Haarig et al.', Paul Zieger, 10 Aug 2017
- AC4: 'Letter of Reply to Paul Zieger', Moritz Haarig, 23 Sep 2017

Peer-review completion

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

AR by Moritz Haarig on behalf of the Authors (23 Sep 2017) Author's response Manuscript

ED: Publish as is (07 Oct 2017) by Joshua Schwarz

AR by Moritz Haarig on behalf of the Authors (09 Oct 2017)

Short summary

The depolarization ratio and the backscatter coefficient of marine particles are correlated with the relative humidity. The measurements were performed under atmospheric conditions with a multi-wavelength lidar system in pure marine conditions over Barbados in February 2014. For RH < 50 % the sea salt particles have a cubic-like shape resulting in an enhanced depolarization ratio of up to 0.15. This agrees with model results of cubic sea salt. The extinction enhancement f(RH) factor was derived.