Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
First ice core records of NO3- stable isotopes from Lomonosovfonna, Svalbard
Uppsala Univ, Dept Earth Sci, Uppsala, Sweden..
Uppsala Univ, Dept Earth Sci, Uppsala, Sweden..
Uppsala Univ, Dept Earth Sci, Uppsala, Sweden..
Uppsala Univ, Dept Earth Sci, Uppsala, Sweden..
Show others and affiliations
Responsible organisation
2015 (English)In: Journal of Geophysical Research - Atmospheres, ISSN 2169-897X, E-ISSN 2169-8996, Vol. 120, no 1, 313-330 p.Article in journal (Refereed) Published
Abstract [en]

Samples from two ice cores drilled at Lomonosovfonna, Svalbard, covering the period 1957-2009, and 1650-1995, respectively, were analyzed for NO(3)(-)concentrations, and NO3- stable isotopes (N-15 and O-18). Post-1950 N-15 has an average of (-6.91.9), which is lower than the isotopic signal known for Summit, Greenland but agrees with values observed in recent Svalbard snow and aerosol. Pre-1900 N-15 has an average of (4.21.6)parts per thousand suggesting that natural sources, enriched in the N-15 isotope, dominated before industrialization. The post-1950 O-18 average of (75.1 +/- 4.1)parts per thousand agrees with data from low and polar latitudes, suggesting similar atmospheric NOy (NOy=NO+NO2+HNO3) processing pathways. The combination of anthropogenic source N-15 and transport isotope effect was estimated as -29.1 parts per thousand for the last 60years. This value is below the usual range of NOx (NOx=NO+NO2) anthropogenic sources which is likely the result of a transport isotope effect of -32 parts per thousand. We suggest that the N-15 recorded at Lomonosovfonna is influenced mainly by fossil fuel combustion, soil emissions, and forest fires; the first and second being responsible for the marked decrease in N-15 observed in the post-1950s record with soil emissions being associated to the decreasing trend in N-15 observed up to present time, and the third being responsible for the sharp increase of N-15 around 2000. Key Points

Place, publisher, year, edition, pages
2015. Vol. 120, no 1, 313-330 p.
Keyword [en]
NO3- stable isotopes, NOx sources, Arctic nitrogen enrichment, ice cores
Research subject
SWEDARCTIC
Identifiers
URN: urn:nbn:se:polar:diva-2405DOI: 10.1002/2013JD020930ISI: 000349104700020OAI: oai:DiVA.org:polar-2405DiVA: diva2:884070
Available from: 2015-12-17 Created: 2015-10-07 Last updated: 2015-12-17

Open Access in DiVA

No full text

Other links

Publisher's full text
In the same journal
Journal of Geophysical Research - Atmospheres

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 16 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf