Articles | Volume 20, issue 5
Atmos. Chem. Phys., 20, 2927–2951, 2020
https://doi.org/10.5194/acp-20-2927-2020
Atmos. Chem. Phys., 20, 2927–2951, 2020
https://doi.org/10.5194/acp-20-2927-2020

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 et al.

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Latest update: 13 Jun 2021
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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.
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