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Observed metre scale horizontal variability of elemental carbon in surface snow
Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
Stockholm University, Faculty of Science, Department of Physical Geography and Quaternary Geology.
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2013 (English)In: Environmental Research Letters, ISSN 1748-9326, E-ISSN 1748-9326, Vol. 8, no 3, 034012- p.Article in journal (Refereed) Published
Abstract [en]

Surface snow investigated for its elemental carbon (EC) concentration, based on a thermal-optical method, at two different sites during winter and spring of 2010 demonstrates metre scale horizontal variability in concentration. Based on the two sites sampled, a clean and a polluted site, the clean site (Arctic Finland) presents the greatest variability. In side-by-side ratios between neighbouring samples, 5 m apart, a ratio of around two was observed for the clean site. The median for the polluted site had a ratio of 1.2 between neighbouring samples. The results suggest that regions exposed to snowdrift may be more sensitive to horizontal variability in EC concentration. Furthermore, these results highlight the importance of carefully choosing sampling sites and timing, as each parameter will have some effect on EC variability. They also emphasize the importance of gathering multiple samples from a site to obtain a representative value for the area.

Place, publisher, year, edition, pages
2013. Vol. 8, no 3, 034012- p.
Keyword [en]
black carbon, elemental carbon, surface snow, metre scale variability
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:su:diva-95783DOI: 10.1088/1748-9326/8/3/034012ISI: 000325247100018OAI: oai:DiVA.org:su-95783DiVA: diva2:661637
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AuthorCount:5;

Available from: 2013-11-04 Created: 2013-11-04 Last updated: 2017-12-06Bibliographically approved

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Ström, JohanHansson, Margareta
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