Tropospheric HONO distribution and chemistry in the southeastern US

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dc.contributor.author Ye, Chunxiang
dc.contributor.author Zhou, Xianliang
dc.contributor.author Pu, Dennis
dc.contributor.author Stutz, Jochen
dc.contributor.author Festa, James
dc.contributor.author Spolaor, Max
dc.contributor.author Tsai, Catalina
dc.contributor.author Cantrell, Christopher
dc.contributor.author Mauldin, Roy L.
dc.contributor.author Weinheimer, Andrew
dc.contributor.author Hornbrook, Rebecca S.
dc.contributor.author Apel, Eric C.
dc.contributor.author Guenther, Alex
dc.contributor.author Kaser, Lisa
dc.contributor.author Yuan, Bin
dc.contributor.author Karl, Thomas
dc.contributor.author Haggerty, Julie
dc.contributor.author Hall, Samuel
dc.contributor.author Ullmann, Kirk
dc.contributor.author Smith, James
dc.contributor.author Ortega, John
dc.date.accessioned 2018-08-09T07:00:01Z
dc.date.available 2018-08-09T07:00:01Z
dc.date.issued 2018-06-29
dc.identifier.citation Ye , C , Zhou , X , Pu , D , Stutz , J , Festa , J , Spolaor , M , Tsai , C , Cantrell , C , Mauldin , R L , Weinheimer , A , Hornbrook , R S , Apel , E C , Guenther , A , Kaser , L , Yuan , B , Karl , T , Haggerty , J , Hall , S , Ullmann , K , Smith , J & Ortega , J 2018 , ' Tropospheric HONO distribution and chemistry in the southeastern US ' , Atmospheric Chemistry and Physics , vol. 18 , no. 12 , pp. 9107-9120 . https://doi.org/10.5194/acp-18-9107-2018
dc.identifier.other PURE: 115011844
dc.identifier.other PURE UUID: 27aead2d-60ab-44ec-bc72-4664bd3cfa9b
dc.identifier.other WOS: 000436876300001
dc.identifier.other Scopus: 85049372595
dc.identifier.uri http://hdl.handle.net/10138/237934
dc.description.abstract Here we report the measurement results of nitrous acid (HONO) and a suite of relevant parameters on the NCAR C-130 research aircraft in the southeastern US during the NOMADSS 2013 summer field study. The daytime HONO concentration ranged from low parts per trillion by volume (pptv) in the free troposphere (FT) to mostly within 5-15 pptv in the background planetary boundary layer (PBL). There was no discernible vertical HONO gradient above the lower flight altitude of 300m in the PBL, and the transport of ground surface HONO was not found to be a significant contributor to the tropospheric HONO budget. The total in situ HONO source mean (+/- 1 SD) was calculated as 53 (+/- 21) pptv h(-1) during the day. The upper-limit contribution from NOx-related reactions was 10 (+/- 5) pptv h(-1), and the contribution from photolysis of particulate nitrate (pNO(3)) was 38 (+/- 23) pptv h(-1), based on the measured pNO(3) concentrations and the median pNO(3) photolysis rate constant of 2.0 x 10 4 s(-1) determined in the laboratory using ambient aerosol samples. The photolysis of HONO contributed to less than 10% of the primary OH source. However, a recycling NOx source via pNO(3) photolysis was equivalent to similar to 2.3 x 10(-6) molm(-2) h(-1) in the air column within the PBL, a considerable supplementary NOx source in the low-NOx background area. Up to several tens of parts per trillion by volume of HONO were observed in power plant and urban plumes during the day, mostly produced in situ from precursors including NOx and pNO(3). Finally, there was no observable accumulation of HONO in the nocturnal residual layer and the nocturnal FT in the background southeastern US, with an increase in the HONO / NOx ratio of en
dc.format.extent 14
dc.language.iso eng
dc.relation.ispartof Atmospheric Chemistry and Physics
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject ATMOSPHERIC BOUNDARY-LAYER
dc.subject ABSORPTION CROSS-SECTIONS
dc.subject RING-DOWN SPECTROSCOPY
dc.subject NITRIC-ACID PHOTOLYSIS
dc.subject NITROUS-ACID
dc.subject VERTICAL PROFILES
dc.subject HETEROGENEOUS HYDROLYSIS
dc.subject REACTIVE NITROGEN
dc.subject ORGANIC-COMPOUNDS
dc.subject URBAN ATMOSPHERE
dc.subject 114 Physical sciences
dc.title Tropospheric HONO distribution and chemistry in the southeastern US en
dc.type Article
dc.contributor.organization Department of Physics
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.5194/acp-18-9107-2018
dc.relation.issn 1680-7316
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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