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Deposition of acidifying and neutralising compounds over the Baltic Sea drainage basin between 1960 and 2006
Stockholm University, Faculty of Science, Department of Geological Sciences.
2013 (English)In: Boreal environment research, ISSN 1239-6095, Vol. 18, no 6, 425-445 p.Article in journal (Refereed) Published
Abstract [en]

This study produced a gridded database of acidifying and eutrophying deposition in the Baltic Sea and its drainage basin for the period 1960-2006. Data from various data sets were combined to generate monthly atmospheric (wet) deposition of cations (Ca2+, Mg2+, Na+, K+ and NH4+) and anions (SO42-, NO3- and Cl-). Output of a chemical transport model and interpolated measurements were used, and when these were not available, trends and seasonal cycles were constructed from historical emissions and deposition data. These methods lose some spatial patterns, but the mean trends reflect the influence of east-European emissions more than earlier studies with more westerly-centred observations. The calculated depositions of sulphur, nitrogen and calcium (correlated with sulphur emission) increased from 1960 to 1990 and then decreased until 2006. The trend is most evident for sulphur with a 100% increase followed by a 73% decrease.

Place, publisher, year, edition, pages
2013. Vol. 18, no 6, 425-445 p.
National Category
Environmental Sciences Ecology
URN: urn:nbn:se:su:diva-97923ISI: 000327807000001OAI: diva2:681317
Available from: 2013-12-19 Created: 2013-12-19 Last updated: 2014-01-03Bibliographically approved

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Wällstedt, Teresia
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