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  Daytime formation of nitrous acid at a coastal remote site in Cyprus indicating a common ground source of atmospheric HONO and NO

Meusel, H., Kuhn, U., Reiffs, A., Mallik, C., Harder, H., Martinez, M., et al. (2016). Daytime formation of nitrous acid at a coastal remote site in Cyprus indicating a common ground source of atmospheric HONO and NO. Atmospheric Chemistry and Physics, 16(22), 14475-14493. doi:10.5194/acp-16-14475-2016.

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Meusel, H.1, Autor           
Kuhn, U.1, Autor           
Reiffs, Andreas2, Autor           
Mallik, Chinmay3, Autor
Harder, H.2, Autor           
Martinez, M.2, Autor           
Schuladen, J.2, Autor           
Bohn, Birger3, Autor
Parchatka, U.2, Autor           
Crowley, J. N.2, Autor           
Fischer, H.2, Autor           
Tomsche, L.2, Autor           
Novelli, A.2, Autor           
Hoffmann , Thorsten3, Autor
Janssen, R. H. H.2, Autor           
Hartogensis, Oscar3, Autor
Pikridas, Michael3, Autor
Vrekoussis, Mihalis3, Autor
Bourtsoukidis, E.2, Autor           
Weber, B.1, Autor           
Lelieveld, J.2, Autor           Williams, J.2, Autor           Pöschl, U.1, Autor           Cheng, Y.1, Autor           Su, H.1, Autor            mehr..
Affiliations:
1Multiphase Chemistry, Max Planck Institute for Chemistry, Max Planck Society, ou_1826290              
2Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society, ou_1826285              
3external, ou_persistent22              

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 Zusammenfassung: Characterization of daytime sources of nitrous acid (HONO) is crucial to understand atmospheric oxidation and radical cycling in the planetary boundary layer. HONO and numerous other atmospheric trace constituents were measured on the Mediterranean island of Cyprus during the CYPHEX (CYprus PHotochemical EXperiment) campaign in summer 2014. Average volume mixing ratios of HONO were 35 pptv (+/- 25 pptv) with a HONO/NOx ratio of 0.33, which was considerably higher than reported for most other rural and urban regions. Diel profiles of HONO showed peak values in the late morning (60 +/- 28 pptv around 09: 00 local time) and persistently high mixing ratios during daytime (45 +/- 18 pptv), indicating that the photolytic loss of HONO is compensated by a strong daytime source. Budget analyses revealed unidentified sources producing up to 3.4 x 10(6) molecules cm(-3) s(-1) of HONO and up to 2.0 x 10(7) molecules cm(-3) s(-1) NO. Under humid conditions (relative humidity > 70 %), the source strengths of HONO and NO exhibited a close linear correlation (R-2 = 0: 72), suggesting a common source that may be attributable to emissions from microbial communities on soil surfaces.

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Sprache(n): eng - English
 Datum: 2016
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: ISI: 000388187800003
DOI: 10.5194/acp-16-14475-2016
 Art des Abschluß: -

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Titel: Atmospheric Chemistry and Physics
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Katlenburg-Lindau, Germany : European Geosciences Union
Seiten: - Band / Heft: 16 (22) Artikelnummer: - Start- / Endseite: 14475 - 14493 Identifikator: ISSN: 1680-7316
CoNE: https://pure.mpg.de/cone/journals/resource/111030403014016