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Reactive nitrogen and sulphate wet deposition at Zeppelin Station, Ny-Alesund, Svalbard
Norwegian Polar Res Inst, Fram Ctr, NO-9296 Tromso, Norway.;Univ Oslo, Fac Math & Nat Sci, Dept Geosci, NO-0315 Oslo, Norway..
Norwegian Polar Res Inst, Fram Ctr, NO-9296 Tromso, Norway.;Univ Oslo, Fac Math & Nat Sci, Dept Geosci, NO-0315 Oslo, Norway..
Uppsala Univ, Dept Earth Sci, SE-75236 Uppsala, Sweden..
Univ Sheffield, Dept Geog, Sheffield S10 2TN, S Yorkshire, England..
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2013 (English)In: Polar Research, ISSN 0800-0395, E-ISSN 1751-8369, Vol. 32, UNSP 19136Article in journal (Refereed) Published
Abstract [en]

As a potent fertilizer, reactive nitrogen plays an important role in Arctic ecosystems. Since the Arctic is a nutrient-limited environment, changes in nitrogen deposition can have severe impacts on local ecosystems. To quantify the amount of nitrogen deposited through snow and rain events, precipitation sampling was performed at Zeppelin Station, Svalbard, from November 2009 until May 2011. The samples were analysed for NO3-; nss-SO42- and NH4+ concentrations, and the deposition of single precipitation events was calculated using precipitation measurements taken at nearby Ny-Alesund. The majority of observed events showed concentrations ranging from 0.01 to 0.1 mg L-1 N for NO3- and NH4+ and from 0.02 to 0.3 mg L-1 S for nss-SO42-. The majority of calculated depositions ranged from 0.01 to 0.1 mg m(-2) N for NO3- and NH4+ and from 0.02 to 0.3 mg m(-2) S for nss-SO42-. The budget was controlled by strong deposition events, caused by long-lasting precipitation episodes that lasted for several days and which had raised concentrations of nitrogen and sulphur. Three future scenarios of increasing precipitation in the Arctic were considered. The results showed that deposition is mainly controlled by the amount of precipitation, which leads to the conclusion that increased precipitation might cause increases in deposition of the same magnitude.

Place, publisher, year, edition, pages
2013. Vol. 32, UNSP 19136
Keyword [en]
Nitrogen, sulphur, Arctic, precipitation, sampling, NSINK
Research subject
SWEDARCTIC 2006, Zeppelin; SWEDARCTIC 2007, Zeppelin 2007
Identifiers
URN: urn:nbn:se:polar:diva-2294DOI: 10.3402/polar.v32i0.19136ISI: 000317580400001OAI: oai:DiVA.org:polar-2294DiVA: diva2:858182
Available from: 2015-10-01 Created: 2015-10-01 Last updated: 2015-10-01

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