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Reconstructing past atmospheric circulation changes using oxygen isotopes in lake sediments from Sweden
Stockholm University, Faculty of Science, Department of Physical Geography and Quaternary Geology.
Stockholm University, Faculty of Science, Department of Physical Geography and Quaternary Geology.
Stockholm University, Faculty of Science, Department of Physical Geography and Quaternary Geology.
2009 (English)In: Climate of the Past Discussions, ISSN 1814-9340, Vol. 5, no 3, 1609-1644 p.Article in journal (Refereed) Published
Abstract [en]

Here we use lake sediment studies from Sweden to illustrate how Holocene-aged oxygen isotope records (from lakes located in different hydrological settings) can provide information about climate change. In particular changes in precipitation, atmospheric circulation and water balance. We highlight the importance of understanding the present and past lake hydrology, and the relationship between climate parameters and the oxygen isotopic composition of precipitation (d18Op) and lake waters (d18Olakewater) for interpretation of the oxygen isotopic record from the sediments (d18O). Both precipitation reconstructions from northern Sweden and water balance reconstructions from south and central Sweden show that the atmospheric circulation changed from zonal to a more meridional air flow over the Holocene. Superimposed on this Holocene trend are δ18Op minima resembling intervals of the negative phase of the North Atlantic Oscillation (NAO), thus suggesting that the climate of Northern Europe is strongly influenced by atmospheric and oceanic circulation changes over the North Atlantic.

Place, publisher, year, edition, pages
2009. Vol. 5, no 3, 1609-1644 p.
Keyword [en]
Lake sediment, oxygen isotopes, Sweden, The Holocene
National Category
Physical Geography
Identifiers
URN: urn:nbn:se:su:diva-29438OAI: oai:DiVA.org:su-29438DiVA: diva2:233053
Available from: 2009-08-27 Created: 2009-08-27 Last updated: 2010-04-22Bibliographically approved

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Jonsson, C. E.Andersson, S.Rosqvist, G. C.
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