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Solar forcing of climate during the last millennium recorded in lake sediments from northern Sweden
Responsible organisation
2012 (English)In: The Holocene, ISSN 0959-6836, E-ISSN 1477-0911, Vol. 23, no 3, p. 447-452Article in journal (Refereed) Published
Abstract [en]

We report on a sediment record from a small lake within the subarctic wetland complex Stordalen in northernmost Sweden covering the last 1000 years. Variations in the content of minerogenic material are found to follow reconstructed variations in the activity of the Sun between the 13th and 18th centuries. Periods of low solar activity are associated with minima in minerogenic material and vice versa. A comparison between the sunspot cycle and a long instrumental series of summer precipitation further reveals a link between the 11 yr solar cycle and summer precipitation variability since around 1960. Solar minima are in this period associated with minima in summer precipitation, whereas the amount of summer precipitation increases during periods with higher solar activity. Our results suggest that the climate responds to both the 11 yr solar cycle and to long-term changes in solar activity and in particular solar minima, causing dry conditions with resulting decreased runoff.

Place, publisher, year, edition, pages
SAGE Publications Ltd , 2012. Vol. 23, no 3, p. 447-452
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:polar:diva-8400DOI: 10.1177/0959683612460781OAI: oai:DiVA.org:polar-8400DiVA, id: diva2:1396112
Available from: 2020-02-25 Created: 2020-02-25 Last updated: 2020-02-25Bibliographically approved

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