Seasonal analysis of submicron aerosol in Old Delhi using high-resolution aerosol mass spectrometry: chemical characterisation, source apportionment and new marker identification

Cash, James M.; Langford, Ben; Di Marco, Chiara; Mullinger, Neil J.; Allan, James; Reyes-Villegas, Ernesto; Joshi, Ruthambara; Heal, Mathew R.; Acton, W. Joe F.; Hewitt, C. Nicholas; Misztal, Pawel K.; Drysdale, Will; Mandal, Tuhin K.; Shivani,; Gadi, Ranu; Gurjar, Bhola Ram; Nemitz, Eiko

doi:https://doi.org/10.5194/acp-21-10133-2021

Articles | Volume 21, issue 13

https://doi.org/10.5194/acp-21-10133-2021

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

https://doi.org/10.5194/acp-21-10133-2021

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

Articles | Volume 21, issue 13

Research article

|

07 Jul 2021

Research article |

| 07 Jul 2021

Seasonal analysis of submicron aerosol in Old Delhi using high-resolution aerosol mass spectrometry: chemical characterisation, source apportionment and new marker identification

James M. Cash, Ben Langford, Chiara Di Marco, Neil J. Mullinger, James Allan, Ernesto Reyes-Villegas, Ruthambara Joshi, Mathew R. Heal, W. Joe F. Acton, C. Nicholas Hewitt, Pawel K. Misztal, Will Drysdale, Tuhin K. Mandal, Shivani, Ranu Gadi, Bhola Ram Gurjar, and Eiko Nemitz

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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 acp-2020-1009', Anonymous Referee #1, 01 Feb 2021
- AC1: 'Reply on RC1', James Cash, 20 Apr 2021
- AC3: 'Reply on RC1', James Cash, 21 Apr 2021
RC2: 'Review of Cash et al., acp-2020-1009', Anonymous Referee #2, 16 Feb 2021
- AC2: 'Reply on RC2', James Cash, 20 Apr 2021

Peer-review completion

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

AR by James Cash on behalf of the Authors (23 Apr 2021) Author's response Author's tracked changes Manuscript

ED: Publish subject to minor revisions (review by editor) (02 May 2021) by Roya Bahreini

AR by James Cash on behalf of the Authors (10 May 2021) Author's response Author's tracked changes Manuscript

ED: Publish as is (10 May 2021) by Roya Bahreini

AR by James Cash on behalf of the Authors (17 May 2021)

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Short summary

We present the first real-time composition of submicron particulate matter (PM₁) in Old Delhi using high-resolution aerosol mass spectrometry. Seasonal analysis shows peak concentrations occur during the post-monsoon, and novel-tracers reveal the largest sources are a combination of local open and regional crop residue burning. Strong links between increased chloride aerosol concentrations and burning sources of PM₁ suggest burning sources are responsible for the post-monsoon chloride peak.