Optical properties and composition of viscous organic particles found in the Southern Great Plains

Fraund, Matthew; Bonanno, Daniel J.; China, Swarup; Pham, Don Q.; Veghte, Daniel; Weis, Johannes; Kulkarni, Gourihar; Teske, Ken; Gilles, Mary K.; Laskin, Alexander; Moffet, Ryan C.

doi:https://doi.org/10.5194/acp-20-11593-2020

Articles | Volume 20, issue 19

https://doi.org/10.5194/acp-20-11593-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-20-11593-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 19

Research article

|

12 Oct 2020

Research article |

| 12 Oct 2020

Optical properties and composition of viscous organic particles found in the Southern Great Plains

Matthew Fraund, Daniel J. Bonanno, Swarup China, Don Q. Pham, Daniel Veghte, Johannes Weis, Gourihar Kulkarni, Ken Teske, Mary K. Gilles, Alexander Laskin, and Ryan C. Moffet

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Final revised paper (published on 12 Oct 2020)
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Preprint (discussion started on 31 Mar 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: 'Referee comments to “Optical properties and composition of viscous organic particles found in the Southern Great Plains”', Anonymous Referee #1, 14 May 2020
- AC1: 'Response to Referees of acp-2020-255', Matthew Fraund, 07 Aug 2020
RC2: 'Review for “Optical properties and composition of viscous organic particles found in the Southern Great Plains” by Fraund et al.', Anonymous Referee #2, 09 Jun 2020
- AC1: 'Response to Referees of acp-2020-255', Matthew Fraund, 07 Aug 2020
AC1: 'Response to Referees of acp-2020-255', Matthew Fraund, 07 Aug 2020

Peer-review completion

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

AR by Matthew Fraund on behalf of the Authors (07 Aug 2020) Author's response Manuscript

ED: Publish as is (13 Aug 2020) by Markus Petters

AR by Matthew Fraund on behalf of the Authors (17 Aug 2020)

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Short summary

High viscosity organic particles (HVOPs) in the Southern Great Plains have been analyzed, and two particle types were found. Previously studied tar balls and the recently discovered airborne soil organic particles (ASOPs) are both shown to be brown carbon (BrC). These particle types can be identified in bulk by an absorption Ångström exponent approaching 2.6. HVOP types can be differentiated by comparing carbon absorption spectrum peak ratios between the carboxylic acid, alcohol, and sp² peaks.