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| Titel |
The DO-climate events are probably noise induced: statistical investigation of the claimed 1470 years cycle |
| VerfasserIn |
P. D. Ditlevsen, K. K. Andersen, A. Svensson |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1814-9324
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| Digitales Dokument |
URL |
| Erschienen |
In: Climate of the Past ; 3, no. 1 ; Nr. 3, no. 1 (2007-02-28), S.129-134 |
| Datensatznummer |
250000747
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| Publikation (Nr.) |
 copernicus.org/cp-3-129-2007.pdf |
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| Zusammenfassung |
| The significance of the apparent 1470 years cycle in the recurrence of
the Dansgaard-Oeschger (DO) events, observed in the Greenland ice cores,
is debated. Here we present statistical significance
tests of this periodicity.
The detection of a periodicity relies strongly on the accuracy of the
dating of the DO events. Here we use both the new NGRIP GICC05 time scale based
on multi-parameter annual layer counting and the GISP2 time scale where
the periodicity is most pronounced. For the NGRIP dating the recurrence
times are indistinguishable from a random occurrence. This is also the
case for the GISP2 dating, except in the case where the DO9 event is
omitted from the record. |
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