Organic tracers of fine aerosol particles in central Alaska: summertime composition and sources

Deshmukh, Dhananjay Kumar; Haque, M. Mozammel; Kim, Yongwon; Kawamura, Kimitaka

doi:https://doi.org/10.5194/acp-19-14009-2019

Articles | Volume 19, issue 22

https://doi.org/10.5194/acp-19-14009-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-19-14009-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 22

Research article

|

21 Nov 2019

Research article |

| 21 Nov 2019

Organic tracers of fine aerosol particles in central Alaska: summertime composition and sources

Dhananjay Kumar Deshmukh, M. Mozammel Haque, Yongwon Kim, and Kimitaka Kawamura

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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 Deshmukh et al., ' Organic tracers...'', Anonymous Referee #2, 22 Jun 2019
- AC1: 'Reply to comments of anonymous Referee # 2', Dhananjay Kumar Deshmukh, 17 Sep 2019
RC2: 'Review of acp-2019-293', Anonymous Referee #3, 08 Aug 2019
- AC2: 'Reply to comments of anonymous Referee # 3', Dhananjay Kumar Deshmukh, 17 Sep 2019

Peer-review completion

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

AR by Dhananjay Kumar Deshmukh on behalf of the Authors (24 Sep 2019) Author's response Manuscript

ED: Publish subject to minor revisions (review by editor) (30 Sep 2019) by Maria Kanakidou

Thank you very much for the careful revision of your manuscript. However, further improvements are needed before being accepted for publication in ACP. In addition the use of English language has to be checked throughout the text. Please perform these changes and resubmit your manuscript as a track changes document.

Line 29-30: ‘have a serious impact’ replace by ‘ significantly impact’
Lines 193-194: What was the origin of these air masses?
Line 236: The chemical reaction of anydrosugars with OH radicals…
Line 249: ‘ under different variables’ what do you mean?
Line 252: induced by photochemical aging via oxidation by OH radicals
Line 255 remove ‘were’
Line 256: ‘to contribute’ do you mean ‘ to explain’
Line 260:Wet deposition may be another cause .
Line 354: remove ‘were’
Line 392: They are released into the atmosphere…
Line 408-409: in which sugar alcohols contributed more to the total sugars (ave. 54.2%) than primary sugars (ave. 25.8%) in Alaskan aerosols
Line 422: as major sources
Line 435: the same sample showed
Line 449 replace ‘implication’ by ‘finding’
Line 454: mannitol concentrations were higher during …
Line 461: contributes
Line 483: is also produced…
Line 564: that can be further…
Line 643: replace ‘SOA tracers that contribute very less to …’
SOA tracers with minor contribution
Line 648: replace ‘portion’ by ‘fraction’
Line 659: burning of softwood is common source
Lines 674 to 686 belong to the introduction and not here, please move appropriately
Lines 679: replace ‘were more than double’ by ‘’more than doubled’
Table 2: the 3rd column with the P values is not needed because the necessary information is already in column 4..

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AR by Dhananjay Kumar Deshmukh on behalf of the Authors (08 Oct 2019) Author's response Manuscript

ED: Publish as is (14 Oct 2019) by Maria Kanakidou

AR by Dhananjay Kumar Deshmukh on behalf of the Authors (15 Oct 2019)

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Short summary

Organic tracers are useful to understand the sources and formation mechanisms of organic aerosols. We determined organic tracers in PM_2.5 samples collected during the summer season of 2009 using a gas chromatograph–mass spectrometer. A notable feature in the Alaskan aerosol is the high levels of anhydrosugars and n-alkanoic acids. Our results demonstrate that forest fires and plant emissions are the crucial factors controlling the organic aerosol burden in the atmosphere of central Alaska.