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Nighttime NO emissi...
Nighttime NO emissions strongly suppress chlorine and nitrate radical formation during the winter in Delhi
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- Haslett, Sophie, 1988- (author)
- Stockholms universitet,Institutionen för miljövetenskap,Bolincentret för klimatforskning (tills m KTH & SMHI)
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Bell, David M. (author)
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Kumar, Varun (author)
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Slowik, Jay G. (author)
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Wang, Dongyu S. (author)
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Mishra, Suneeti (author)
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Rastogi, Neeraj (author)
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Singh, Atinderpal (author)
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Ganguly, Dilip (author)
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Thornton, Joel (author)
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Zheng, Feixue (author)
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Li, Yuanyuan (author)
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Nie, Wei (author)
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Liu, Yongchun (author)
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Ma, Wei (author)
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Yan, Chao (author)
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Kulmala, Markku (author)
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Daellenbach, Kaspar R. (author)
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- Hadden, David (author)
- Stockholms universitet,Institutionen för miljövetenskap
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Baltensperger, Urs (author)
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Prevot, Andre S. H. (author)
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Tripathi, Sachchida N. (author)
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- Mohr, Claudia, 1982- (author)
- Stockholms universitet,Institutionen för miljövetenskap,Bolincentret för klimatforskning (tills m KTH & SMHI),Paul Scherrer Institute, Switzerland
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(creator_code:org_t)
- 2023
- 2023
- English.
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In: Atmospheric Chemistry And Physics. - 1680-7316 .- 1680-7324. ; 23:16, s. 9023-9036
- Related links:
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https://doi.org/10.5...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- Atmospheric pollution in urban regions is highly influenced by oxidants due to their important role in the formation of secondary organic aerosol (SOA) and smog. These include the nitrate radical (NO3), which is typically considered a nighttime oxidant, and the chlorine radical (Cl), an extremely potent oxidant that can be released in the morning in chloride-rich environments as a result of nocturnal build-up of nitryl chloride (ClNO2). Chloride makes up a higher percentage of particulate matter in Delhi than has been observed anywhere else in the world, which results in Cl having an unusually strong influence in this city. Here, we present observations and model results revealing that atmospheric chemistry in Delhi exhibits an unusual diel cycle that is controlled by high concentrations of NO during the night. As a result of this, the formation of both NO3 and dinitrogen pentoxide (N2O5), a precursor of ClNO2 and thus Cl, are suppressed at night and increase to unusually high levels during the day. Our results indicate that a substantial reduction in nighttime NO has the potential to increase both nocturnal oxidation via NO(3 )and the production of Cl during the day.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Haslett, Sophie, ...
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Bell, David M.
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Kumar, Varun
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Slowik, Jay G.
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Wang, Dongyu S.
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Mishra, Suneeti
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show more...
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Rastogi, Neeraj
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Singh, Atinderpa ...
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Ganguly, Dilip
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Thornton, Joel
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Zheng, Feixue
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Li, Yuanyuan
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Nie, Wei
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Liu, Yongchun
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Ma, Wei
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Yan, Chao
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Kulmala, Markku
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Daellenbach, Kas ...
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Hadden, David
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Baltensperger, U ...
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Prevot, Andre S. ...
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Tripathi, Sachch ...
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Mohr, Claudia, 1 ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
- Articles in the publication
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Atmospheric Chem ...
- By the university
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Stockholm University