Solar forced Dansgaard/Oeschger events?

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 th...

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Bibliographic Details
Published in:Geophysical Research Letters
Main Authors: Muscheler, R., Beer, J.
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2006
Subjects:
Dansgaard-Oeschger events
ice core
Online Access:https://doi.org/10.1029/2006GL026779
Description
Summary: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 10 Be and δ 18 O 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.

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