New insights into atmospheric sources and sinks of isocyanic acid, HNCO, from recent urban and regional observations

Basit Öğe Kaydı
dc.authorid0000-0003-3811-8496en_US
dc.authorid0000-0001-7539-353Xen_US
dc.authorid0000-0001-8926-4237en_US
dc.authorid0000-0002-2025-9242
dc.contributor.authorRoberts, James M.
dc.contributor.authorVeres, Patrick R.
dc.contributor.authorVandenBoer, Trevor C.
dc.contributor.authorWarneke, Carsten
dc.contributor.authorGraus, Martin
dc.contributor.authorÖztürk, Fatma
dc.date.accessioned2021-06-23T19:36:27Z
dc.date.available2021-06-23T19:36:27Z
dc.date.issued2014
dc.departmentBAİBÜ, Mühendislik Fakültesi, Çevre Mühendisliği Bölümüen_US
dc.description.abstractIsocyanic acid (HNCO) has only recently been measured in the ambient atmosphere, and many aspects of its atmospheric chemistry are still uncertain. HNCO was measured during three diverse field campaigns: California Nexus-Research at the Nexus of Air Quality and Climate Change (CalNex 2010) at the Pasadena ground site, Nitrogen, Aerosol Composition, and Halogens on a Tall Tower (NACHTT 2011) at the Boulder Atmospheric Observatory (BAO) in Weld County, CO, and Biofuel Crops emission of Ozone precursors intensive (BioCORN 2011), in a cornfield NW of Fort Collins, CO. Mixing ratios varied from below detection limit (similar to 0.003 ppbv) to over 1.2 ppbv during a period when agricultural burning impacted the BAO Tower site. Urban areas, such as the CalNex 2010 Pasadena site, appear to have both primary (combustion) and secondary (photochemical) sources of HNCO, 50 +/- 9%, and 33 +/- 12%, respectively, while primary sources were responsible for the large mixing ratios of HNCO observed during the wintertime NACHTT study in suburban Colorado. Isocyanic acid during the BioCORN study in rural NE Colorado was closely correlated to ozone and therefore likely photochemically produced as a secondary product from amines or formamide. The removal of HNCO from the lower atmosphere is thought to be due to deposition, as common gas phase loss processes of photolysis and reactions with hydroxyl radicals, are slow. These ambient measurements are consistent with some HNCO deposition, which was evident at night at these surface sites.en_US
dc.identifier.doi10.1002/2013JD019931
dc.identifier.endpage1072en_US
dc.identifier.issn2169-897X
dc.identifier.issn2169-8996
dc.identifier.issue2en_US
dc.identifier.scopus2-s2.0-84900606781en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage1060en_US
dc.identifier.urihttps://doi.org/10.1002/2013JD019931
dc.identifier.urihttps://hdl.handle.net/20.500.12491/7994
dc.identifier.volume119en_US
dc.identifier.wosWOS:000338338100024en_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.titleNew insights into atmospheric sources and sinks of isocyanic acid, HNCO, from recent urban and regional observationsen_US
dc.typeArticleen_US

Dosyalar

Orijinal paket
Listeleniyor 1 - 1 / 1
Küçük Resim
İsim:
james-m.-roberts.pdf
Boyut:
1.9 MB
Biçim:
Adobe Portable Document Format
Açıklama:
Tam metin/Full text
İndir

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu
Çevre Mühendisliği Bölümü Koleksiyonu