Articles | Volume 19, issue 10
https://doi.org/10.5194/acp-19-6843-2019
https://doi.org/10.5194/acp-19-6843-2019
Research article
 | 
22 May 2019
Research article |  | 22 May 2019

Submicron aerosol composition in the world's most polluted megacity: the Delhi Aerosol Supersite study

Shahzad Gani, Sahil Bhandari, Sarah Seraj, Dongyu S. Wang, Kanan Patel, Prashant Soni, Zainab Arub, Gazala Habib, Lea Hildebrandt Ruiz, and Joshua S. Apte

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Cited articles

Apte, J. S., Bombrun, E., Marshall, J. D., and Nazaroff, W. W.: Global intraurban intake fractions for primary air pollutants from vehicles and other distributed sources, Environ. Sci. Technol., 46, 3415–3423, https://doi.org/10.1021/es204021h, 2012. a
Apte, J. S., Brauer, M., Cohen, A. J., Ezzati, M., and Pope, C. A.: Ambient PM2.5 reduces global and regional life expectancy, Environ. Sci. Technol. Lett., 5, 546–551, https://doi.org/10.1021/acs.estlett.8b00360, 2018. a, b
Baidya, S. and Borken-Kleefeld, J.: Atmospheric emissions from road transportation in India, Energ. Policy, 37, 3812–3822, https://doi.org/10.1016/j.enpol.2009.07.010, 2009. a
Ban-Weiss, G. A., Lunden, M. M., Kirchstetter, T. W., and Harley, R. A.: Measurement of black carbon and particle number emission factors from individual heavy-duty trucks, Environ. Sci. Technol., 43, 1419–1424, https://doi.org/10.1021/es8021039, 2009. a
Bhanarkar, A. D., Purohit, P., Rafaj, P., Amann, M., Bertok, I., Cofala, J., Rao, P. S., Vardhan, B., Kiesewetter, G., Sander, R., Schöpp, W., Majumdar, D., Srivastava, A., Deshmukh, S., Kawarti, A., and Kumar, R.: Managing future air quality in megacities: Co-benefit assessment for Delhi, Atmos. Environ., 186, 158–177, https://doi.org/10.1016/j.atmosenv.2018.05.026, 2018. a
Short summary
Delhi experiences particulate matter concentrations that are among the highest in the world. We conducted a long-term campaign to make highly time-resolved measurements of submicron particle (PM1) chemical composition in Delhi. Our dataset illuminates key sources and atmospheric processes that impact Delhi's PM1 concentrations, with sharp differences among seasons and between day and night. In addition to local sources, Delhi's PM1 levels are amplified by regional pollution and meteorology.
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