Understanding the role of the ground surface in HONO vertical structure: High resolution vertical profiles during NACHTT-11

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dc.authorid0000-0001-8865-5463en_US
dc.authorid0000-0001-8926-4237en_US
dc.contributor.authorVandenBoer, Trevor C.
dc.contributor.authorBrown, Steven S.
dc.contributor.authorMurphy, Jennifer G.
dc.contributor.authorKeene, William C.
dc.contributor.authorYoung, Cora J.
dc.contributor.authorÖztürk, Fatma
dc.date.accessioned2021-06-23T19:34:15Z
dc.date.available2021-06-23T19:34:15Z
dc.date.issued2013
dc.departmentBAİBÜ, Mühendislik Fakültesi, Çevre Mühendisliği Bölümüen_US
dc.description.abstractA negative-ion proton-transfer chemical ionization mass spectrometer was deployed on a mobile tower-mounted platform during Nitrogen, Aerosol Composition, and Halogens on a Tall Tower (NACHTT) to measure nitrous acid (HONO) in the winter of 2011. High resolution vertical profiles revealed (i) HONO gradients in nocturnal boundary layers, (ii) ground surface dominates HONO production by heterogeneous uptake of NO2, (iii) significant quantities of HONO may be deposited to the ground surface at night, (iv) daytime gradients indicative of ground HONO production or emission, and (v) an estimated surface HONO reservoir comparable or larger than integrated daytime HONO surface production. Nocturnal integrated column observations of HONO and NO2 allowed direct evaluation of nocturnal ground surface uptake coefficients for these species (gamma(NO2, surf)=2x10(-6) to 1.6x10(-5) and gamma(HONO, surf)=2x10(-5) to 2x10(-4)). A chemical model showed that the unknown source of HONO was highest in the morning, 4x10(6)moleculescm(-3)s(-1) (600pptvh(-1)), declined throughout the day, and minimized near 1x10(6)moleculescm(-3)s(-1) (165pptvh(-1)). The quantity of surface-deposited HONO was also modeled, showing that HONO deposited to the surface at night was at least 25%, and likely in excess of 100%, of the calculated unknown daytime HONO source. These results suggest that if nocturnally deposited HONO forms a conservative surface reservoir, which can be released the following day, a significant fraction of the daytime HONO source can be explained for the NACHTT observations.en_US
dc.identifier.doi10.1002/jgrd.50721
dc.identifier.endpage10171en_US
dc.identifier.issn2169-897X
dc.identifier.issn2169-8996
dc.identifier.issue17en_US
dc.identifier.scopus2-s2.0-84886027632en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage10155en_US
dc.identifier.urihttps://doi.org/10.1002/jgrd.50721
dc.identifier.urihttps://hdl.handle.net/20.500.12491/7445
dc.identifier.volume118en_US
dc.identifier.wosWOS:000325489300001en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorÖztürk, Fatma
dc.language.isoenen_US
dc.publisherAmer Geophysical Unionen_US
dc.relation.ispartofJournal Of Geophysical Research-Atmospheresen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectNitrous Acid (HONO)en_US
dc.subjectVertical Gradientsen_US
dc.subjectSurface Depostionen_US
dc.subjectOH Sourceen_US
dc.titleUnderstanding the role of the ground surface in HONO vertical structure: High resolution vertical profiles during NACHTT-11en_US
dc.typeArticleen_US

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