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GEOPHYSICAL RESEARCH LETTERS,
VOL. 33,
L20706,
4 PP., 2006
doi:10.1029/2006GL026779
Solar forced Dansgaard/Oeschger events?
Goddard Earth Sciences and Technology Center, University of Maryland, Baltimore County, Baltimore, Maryland, USA
Department of Surface Waters, Swiss Federal Institute of Aquatic Science and Technology (EAWAG), Duebendorf, Switzerland
It has been suggested that the strong climatic changes during the last ice age, the so-called Dansgaard/Oeschger (D/O) events, could have been prompted by solar activity changes. This hypothesis is based on the apparent cyclic occurrence of the D/O events and the solar influence on climate during the Holocene on similar time scales. We test this hypothesis by comparing the 10Be and δ 18O records from the GRIP ice core. A superimposed epoch analysis allows us to reduce the noise in the data and to extract estimates of solar activity changes in connection to the D/O events. This comparison does not provide convincing evidence for a persistent solar influence on these strong climatic oscillations during the last ice age.
Received 3 May 2006; accepted 12 September 2006; published 27 October 2006.
Citation: (2006), Solar forced Dansgaard/Oeschger events?, Geophys. Res. Lett., 33, L20706, doi:10.1029/2006GL026779.
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