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Jonsell, UlfStockholms universitet,Uppsala universitet,Luft- och vattenlära,Glaciologi,Institutionen för naturgeografi och kvartärgeologi (INK)
(author)
Correlation between concentrations of acids and oxygen isotope ratios in polar surface snow caused by local redeposition
- Article/chapterEnglish2007
Publisher, publication year, extent ...
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2007-01-01
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Stockholm University Press,2007
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printrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:uu-14899
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-14899URI
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https://doi.org/10.1111/j.1600-0889.2007.00272.xDOI
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-21941URI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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Investigation of centimeter-scale snow surface chemistry has been carried out at two polar sites with different site characteristics–in Dronning Maud Land, Antarctica and on the Greenland ice sheet, respectively. Large variations in both impurity content and stable oxygen isotope ratios (δ18O) were found on the submeter scale. δ18O and the concentration of nitrate correlated at both sites (r = 0.81 and 0.82, respectively). At the Antarctic site, δ18O is also correlated to concentrations of methanesulphonate (r = 0.84) and sulphate (r = 0.83) while no such correlation exists at the Greenland site. Instead, a strong anticorrelation (r = –0.85) between sulphate and methanesulphonate is found among the samples from the Greenland site. The ions correlating with δ18O at the two sites were probably deposited as acids. Our tentative explanation is that local redeposition of water vapour enriching the snow surface with the lighter isotopes is associated with simultaneous enhanced scavenging of the acids. The responsible process thereby significantly alters the chemical signals of the snow surface.
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Added entries (persons, corporate bodies, meetings, titles ...)
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Hansson, MargaretaStockholms universitet,Institutionen för naturgeografi och kvartärgeologi (INK)(Swepub:su)hansso
(author)
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Mörth, Carl-MagnusStockholms universitet,Institutionen för geologi och geokemi(Swepub:su)morth
(author)
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Uppsala universitetLuft- och vattenlära
(creator_code:org_t)
Related titles
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In:Tellus. Series B, Chemical and physical meteorology: Stockholm University Press59:2, s. 326-3350280-65091600-0889
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In:Tellus: B: Stockholm University Press59:2, s. 326-335
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