Ambient air quality in the Kathmandu Valley, Nepal, during the pre-monsoon: concentrations and sources of particulate matter and trace gases

Islam, Md. Robiul; Jayarathne, Thilina; Simpson, Isobel J.; Werden, Benjamin; Maben, John; Gilbert, Ashley; Praveen, Puppala S.; Adhikari, Sagar; Panday, Arnico K.; Rupakheti, Maheswar; Blake, Donald R.; Yokelson, Robert J.; DeCarlo, Peter F.; Keene, William C.; Stone, Elizabeth A.

doi:https://doi.org/10.5194/acp-20-2927-2020

Articles | Volume 20, issue 5

https://doi.org/10.5194/acp-20-2927-2020

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

https://doi.org/10.5194/acp-20-2927-2020

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

Articles | Volume 20, issue 5

Research article

|

11 Mar 2020

Research article |

| 11 Mar 2020

Ambient air quality in the Kathmandu Valley, Nepal, during the pre-monsoon: concentrations and sources of particulate matter and trace gases

Md. Robiul Islam, Thilina Jayarathne, Isobel J. Simpson, Benjamin Werden, John Maben, Ashley Gilbert, Puppala S. Praveen, Sagar Adhikari, Arnico K. Panday, Maheswar Rupakheti, Donald R. Blake, Robert J. Yokelson, Peter F. DeCarlo, William C. Keene, and Elizabeth A. Stone

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Final revised paper (published on 11 Mar 2020)
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Preprint (discussion started on 08 May 2019)
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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: 'Comments', Anonymous Referee #1, 24 Jun 2019
RC2: 'Referee comment', Anonymous Referee #2, 12 Oct 2019
AC1: 'Response to Referee #1 and #2', Elizabeth Stone, 22 Nov 2019

Peer-review completion

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

AR by Elizabeth Stone on behalf of the Authors (22 Nov 2019) Author's response Manuscript

ED: Publish as is (08 Dec 2019) by Steven Brown

AR by Elizabeth Stone on behalf of the Authors (18 Dec 2019) Manuscript

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Short summary

The Kathmandu Valley experiences high levels of air pollution. In this study, atmospheric gases and particulate matter were characterized by online and off-line measurements, with an emphasis on understanding their sources. The major sources of particulate matter and trace gases were identified as garbage burning, biomass burning, and vehicles. The majority of secondary organic aerosol was attributed to anthropogenic precursors, while a minority was attributed to biogenic gases.