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

Content Provider	Springer Nature Link
Author	Ianniello, Antonietta Spataro, Francesca Salvatori, Rosamaria Valt, Mauro Nardi, Marianna Björkman, Mats P. Esposito, Giulio Montagli, Mauro
Copyright Year	2016
Abstract	Measurements of atmospheric concentrations and fluxes of reactive nitrogen (NO, NO$_{2}$, HNO$_{3}$, NO$_{3}$ $^{−}$ $_{fine}$ and NO$_{3}$ $^{−}$ $_{coarse}$) above the snow surface were performed from 29 March to 30 April 2010 at Ny-Ålesund, Svalbard. Determinations of chemical and physical properties of snow were also carried out. Both NO and NO$_{2}$ showed clear diurnal cycles with noontime maxima and nighttime minima. Significant emission fluxes of NO and NO$_{2}$ were observed, reaching noontime values up to 19.42 and 25.20 pmol/m$^{2}$ s, respectively. The snow surface was the source of NO and NO$_{2}$ but these observed releases were small due to almost alkaline snow environment and chemical forms of snow NO$_{3}$ $^{−}$. Significant deposition fluxes of HNO$_{3}$, fine and coarse particulate NO$_{3}$ $^{−}$ fluxes were also observed, reaching peak values up to −18.00, −37.80 and −12.50 pmol/m$^{2}$ s, respectively, during snowfall events. Measurements of surface snow provided experimental data that the total contribution of dry deposition of these species to the NO$_{3}$ $^{−}$ –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.
Starting Page	33
Ending Page	45
Page Count	13
File Format	PDF
ISSN	20374631
Journal	Rendiconti Lincei
Volume Number	27
Issue Number	1
e-ISSN	17200776
Language	English
Publisher	Springer International Publishing
Publisher Date	2016-05-10
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Arctic region Snow surface Nitrogen oxides Nitric acid Particulate nitrate Nitrogen fluxes Environment Earth Sciences Life Sciences Biomedicine general History of Science
Content Type	Text
Resource Type	Article

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