Microorganisms in Dry Polar Snow Are Involved in the Exchanges of Reactive Nitrogen Species with the Atmosphere (Articolo in rivista)

Type
Label
  • Microorganisms in Dry Polar Snow Are Involved in the Exchanges of Reactive Nitrogen Species with the Atmosphere (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1021/es902730 (literal)
Alternative label
  • Amoroso A. (1); Domine F. (2,3); Esposito G. (1); Morin S.(2,3,4); Savarino J. (2,3); Nardino M. (5); Montagnoli M. (1); Bonneville J.M.(3,6); Clement J.C. (3,6); Ianniello A. (1); Beine H.J (1,7); (2010)
    Microorganisms in Dry Polar Snow Are Involved in the Exchanges of Reactive Nitrogen Species with the Atmosphere
    in Environmental science & technology
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Amoroso A. (1); Domine F. (2,3); Esposito G. (1); Morin S.(2,3,4); Savarino J. (2,3); Nardino M. (5); Montagnoli M. (1); Bonneville J.M.(3,6); Clement J.C. (3,6); Ianniello A. (1); Beine H.J (1,7); (literal)
Pagina inizio
  • 714 (literal)
Pagina fine
  • 719 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 44 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 6 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 2 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1) CNR-IIA; 2) Laboratoire de Glaciologie et Géophysique de l'Environnement, CNRS; 3) Université Joseph Fourier-Grenoble 1; 4) CNR-IBIMET; 5) Laboratoire d'Ecologie Alpine, CNRS; 6) Present address:Météo-France/CNRS,CNRM-GAME,CEN, Saint Martin d'Hères, France; 7) Present address: Department of Land, Water & Air Resources, University of California, Davis, CA; (literal)
Titolo
  • Microorganisms in Dry Polar Snow Are Involved in the Exchanges of Reactive Nitrogen Species with the Atmosphere (literal)
Abstract
  • The snowpack is a complex photochemical reactor that emits a wide variety of reactive molecules to the atmosphere. In particular, the photolysis of nitrate ions, NO(3)(-), produces NO, NO(2), and HONO, which affects the oxidative capacity of the atmosphere. We report measurements in the European High Arctic where we observed for the first time emissions of NO, NO(2), and HONO by the seasonal snowpack in winter, in the complete or near-complete absence of sunlight and in the absence of melting. We also detected unusually high concentrations of nitrite ions, NO(2)(-), in the snow. These results suggest that microbial activity in the snowpack is responsible for the observed emissions. Isotopic analysis of NO(2)(-) and NO(3)(-) in tie snow confirm that these ions, at least in part do not have an atmospheric origin and are most likely produced by the microbial oxidation of NH(4)(+) coming from clay minerals into NO(2)(-) and NO(3)(-). These metabolic pathways also produce NO. Subsequent dark abiotic reactions lead to NO(2) and HONO production. The snow cover is therefore not only an active photochemical reactor but also a biogeochemical reactor active in the cycling of nitrogen and it can affect atmospheric composition all year round. (literal)
Prodotto di
Autore CNR

Incoming links:


Prodotto
Autore CNR di
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
data.CNR.it