Surprisingly small HONO emissions from snow surfaces at Browning Pass, Antarctica (Articolo in rivista)

Type
Label
  • Surprisingly small HONO emissions from snow surfaces at Browning Pass, Antarctica (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.5194/acp-6-2569-2006 (literal)
Alternative label
  • H. J. Beine (1); A. Amoroso (1); F. Dominé (2); M. D. King (3); M. Nardino (4); A. Ianniello (1); J. L. France (3); (2006)
    Surprisingly small HONO emissions from snow surfaces at Browning Pass, Antarctica
    in Atmospheric chemistry and physics (Online)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • H. J. Beine (1); A. Amoroso (1); F. Dominé (2); M. D. King (3); M. Nardino (4); A. Ianniello (1); J. L. France (3); (literal)
Pagina inizio
  • 2569 (literal)
Pagina fine
  • 2580 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.atmos-chem-phys.net/6/2569/2006/acp-6-2569-2006.html (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 6 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 12 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1) C.N.R. - IIA, Via Salaria Km 29,3, 00016 Monterotondo Scalo (Roma), Italy; 2) CNRS - LGGE, BP 96, 54 rue Moli` ere, 38402 Saint Martin d'H` eres, France; 3) Department of Geology, Royal Holloway University of London, Egham, Surrey, TW20 0EX , UK; 4) C.N.R. - IBIMET, Sezione di Bologna, via Gobetti 101, 40129 Bologna, Italy; (literal)
Titolo
  • Surprisingly small HONO emissions from snow surfaces at Browning Pass, Antarctica (literal)
Abstract
  • Measured fluxes of nitrous acid at Browning pass, Antarctica were very low, despite conditions that are generally understood as favorable for HONO emissions, including: acidic snow surfaces, an abundances of NO3- anions in the snow surface, and abundant UV light for NO3- photolysis. photochemical modeling suggests noon time HONO fluxes of 5-10 nmol m-2 h-1; the measured fluxes, however, were close to zero throughout the campaign. The location and state of NO3- in snow is crucial to its reactivity. The analysis of soluble mineral ions in snow reveals that the NO3- ion is probably present in aged snows as NaNO3. This is peculiar to our study site, and we suggest that this may affect the photochemical reactivity of NO3-, by preventing the release of products, or providing a reactive medium for newly formed HONO. In fresh snow, the NO3- ion is probably present as dissolved or adsorbed HNO3 and yet, no HONO emissions were observed. We speculate that HONO formation from NO3- photolysis may involve electron transfer reactions of NO2 from photosensitized organics and that fresh snows at our site had insufficient concentrations of adequate organic compounds to favor this reaction. (literal)
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