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

Delhi, India, routinely experiences some of the world's highest urban particulate matter concentrations. We established the Delhi Aerosol Supersite study to provide long-term characterization of the ambient submicron aerosol composition in Delhi. Here we report on 1.25 years of highly time-reso...

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Veröffentlicht in:	Atmospheric chemistry and physics 2019-05, Vol.19 (10), p.6843-6859
Hauptverfasser:	Gani, Shahzad, Bhandari, Sahil, Seraj, Sarah, Wang, Dongyu S, Patel, Kanan, Soni, Prashant, Arub, Zainab, Habib, Gazala, Hildebrandt Ruiz, Lea, Apte, Joshua S
Format:	Artikel
Sprache:	eng
Schlagworte:	Aerosol composition Aerosols Air pollution Air quality Air sampling Ammonium Ammonium compounds Analysis Atmospheric chemistry Atmospheric composition Atmospheric processes Black carbon Boundary layer height Boundary layers Chloride Chlorides Coefficients Composition Diurnal variations Emissions Environmental aspects Interactions Low wind speeds Mass Megacities Meteorology Monsoon rainfall Monsoons Organic chemistry Particulate emissions Particulate matter Photochemistry Planetary boundary layer Pollutants Pollution Pollution sources Seasonal variability Seasons Secondary aerosols Sulfates Suspended particulate matter Ventilation Weather Wind speed Winter
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Zusammenfassung:	Delhi, India, routinely experiences some of the world's highest urban particulate matter concentrations. We established the Delhi Aerosol Supersite study to provide long-term characterization of the ambient submicron aerosol composition in Delhi. Here we report on 1.25 years of highly time-resolved speciated submicron particulate matter (PM.sub.1) data, including black carbon (BC) and nonrefractory PM.sub.1 (NR-PM.sub.1 ), which we combine to develop a composition-based estimate of PM.sub.1 ("C-PM.sub.1 " = BC + NR-PM.sub.1) concentrations.
ISSN:	1680-7324 1680-7316 1680-7324
DOI:	10.5194/acp-19-6843-2019