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Summer concentrations of NMHCs in ambient air of the Arctic and Antarctic
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2012 (English)In: Boreal environment research, ISSN 1239-6095, E-ISSN 1797-2469, Vol. 17, no 5, 385-397 p.Article in journal (Refereed) Published
Abstract [en]

Summer concentrations of C-2-C-6 non-methane hydrocarbons (NMHCs) were measured in Antarctica and in the Arctic in 2008. The results show that NMHC concentrations are on average five times higher in the Arctic than in Antarctica. In Antarctica, there were few concentration peaks, but during most of the remaining time concentrations were below or close to the detection limits. Over the Arctic pack ice area north of 80 degrees, concentrations of most of the measured NMHCs were always above the detection limits. No differences based on air-mass origin were detected in Antarctica, but samples collected over the central Arctic Ocean showed higher concentrations in air masses being advected from the Kara Sea and the western-central Arctic Ocean. The relatively higher NMHC-to-ethyne molar ratios calculated for samples collected over the central Arctic Ocean suggest additional alkane sources in the region.

Place, publisher, year, edition, pages
2012. Vol. 17, no 5, 385-397 p.
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Natural Sciences
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URN: urn:nbn:se:polar:diva-3007OAI: oai:DiVA.org:polar-3007DiVA: diva2:1046036
Available from: 2016-11-11 Created: 2016-10-27 Last updated: 2016-11-11

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