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Istituto sull'inquinamento atmosferico

Torna all'elenco Contributi in rivista anno 2016

Contributo in rivista

Tipo: Articolo in rivista

Titolo: Air-snow exchange of reactive nitrogen species at Ny-Ålesund, Svalbard (Arctic)

Anno di pubblicazione: 2016

Formato: Elettronico

Autori: Antonietta Ianniello, Francesca Spataro, Rosamaria Salvatori, Mauro Valt, Marianna Nardino, Mats P. Björkman, Giulio Esposito, Mauro Montagnoli

Affiliazioni autori: CNR-IIA, CNR-IBIMET, ARPAV, Dep.of Earth Sciences, University of Gothenburg, Sweden

Autori CNR:

  • GIULIO ESPOSITO
  • ANTONIETTA IANNIELLO
  • MAURO MONTAGNOLI
  • MARIANNA NARDINO
  • ROSAMARIA SALVATORI
  • FRANCESCA SPATARO

Lingua: inglese

Abstract: Measurements of atmospheric concentrations and fluxes of reactive nitrogen (NO, NO2, HNO3, NO3 - fine and NO3 - coarse) above the snow surface were performed from 29 March to 30 April 2010 at Ny-A ° lesund, Svalbard. Determinations of chemical and physical properties of snow were also carried out. Both NO and NO2 showed clear diurnal cycles with noontime maxima and nighttime minima. Significant emission fluxes of NO and NO2 were observed, reaching noontime values up to 19.42 and 25.20 pmol/m2 s, respectively. The snow surface was the source of NO and NO2 but these observed releases were small due to almost alkaline snow environment and chemical forms of snow NO3 -. Significant deposition fluxes of HNO3, fine and coarse particulate NO3 - fluxes were also observed, reaching peak values up to -18.00, -37.80 and -12.50 pmol/m2 s, respectively, during snowfall events. Measurements of surface snow provided experimental data that the total contribution of dry deposition of these species to the NO3 - -N in the snow was about 24 %. However, wet deposition in falling snow seemed to be the major contribution to the nitrate input to the snow.

Lingua abstract: inglese

Pagine da: 33

Pagine a: 45

Pagine totali: 13

Rivista:

Rendiconti lincei. Scienze fisiche e naturali Springer Verlag Italia
Paese di pubblicazione: Italia
Lingua: inglese
ISSN: 2037-4631

Numero volume: 27

DOI: 10.1007/s12210-016-0536-4

Referee: Sì: Internazionale

Stato della pubblicazione: Published version

Indicizzato da: Google Scholar [https://scholar.google.it/citations?view_op=view_citation&hl=it&user=YMNVYBMAAAAJ&citation_for_view=YMNVYBMAAAAJ:hC7cP41nSMkC]

Parole chiave:

  • Arctic region
  • Snow surface
  • Nitrogen oxides
  • Nitric acid
  •  Particulate nitrate
  • Nitrogen fluxes

URL: http://link.springer.com/article/10.1007/s12210-016-0536-4

Strutture CNR:

Moduli:

Allegati: air-snow (application/pdf)

 
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