20-Year Climatology of NO3- and NH4+ Wet Deposition at Ny-Alesund, SvalbardShow others and affiliations
Responsible organisation
2011 (English)In: Advances in Meteorology, ISSN 1687-9309, E-ISSN 1687-9317, article id 406508
Article in journal (Refereed) Published
Abstract [en]
A 20-year dataset of weekly precipitation observations in Ny-Alesund, Svalbard, was analysed to assess atmospheric wet deposition of nitrogen. Mean annual total nitrogen deposition was 74 mg N/(m(2) yr) but exhibited large interannual variability and was dominated by highly episodic "strong" events, probably caused by rapid transport from European sources. The majority (90%) of precipitation samples were defined as "weak" (< 2mgN/m(2)) and contributed an annual baseline of similar to 17 mg N/(m(2) yr), whereas 10% of precipitation samples were defined as "strong" (>2mgN/m(2)) and additionally contributed up to 225 mg N/(m(2) yr). Nitrate deposition largely occurred in samples within the solid-precipitation season (16 September-2 June), and ammonium deposition occurred equally in both solid and liquid seasons. Trends of reactive nitrogen emissions from Europe are uncertain, and increasing cyclonic activity over the North Atlantic caused by a changing climate might lead to more strong deposition events in Svalbard.
Place, publisher, year, edition, pages
2011. article id 406508
Research subject
SWEDARCTIC 2006, Zeppelin; SWEDARCTIC 2007, Zeppelin 2007
Identifiers
URN: urn:nbn:se:polar:diva-2300DOI: 10.1155/2011/406508ISI: 000306749800011OAI: oai:DiVA.org:polar-2300DiVA, id: diva2:858258
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