The DO-climate events are probably noise induced: statistical investigation of the claimed 1470 years cycle
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...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2007-01-01
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| Series: | Climate of the Past |
| Online Access: | http://www.clim-past.net/3/129/2007/cp-3-129-2007.pdf |
| _version_ | 1818922291018334208 |
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| author | P. D. Ditlevsen K. K. Andersen A. Svensson |
| author_facet | P. D. Ditlevsen K. K. Andersen A. Svensson |
| author_sort | P. D. Ditlevsen |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-20T01:51:12Z |
| format | Article |
| id | doaj.art-2169126c7236477cb0f4c8c1d2e05962 |
| institution | Directory Open Access Journal |
| issn | 1814-9324 1814-9332 |
| language | English |
| last_indexed | 2024-12-20T01:51:12Z |
| publishDate | 2007-01-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Climate of the Past |
| spelling | doaj.art-2169126c7236477cb0f4c8c1d2e059622022-12-21T19:57:38ZengCopernicus PublicationsClimate of the Past1814-93241814-93322007-01-0131129134The DO-climate events are probably noise induced: statistical investigation of the claimed 1470 years cycleP. D. DitlevsenK. K. AndersenA. SvenssonThe 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.http://www.clim-past.net/3/129/2007/cp-3-129-2007.pdf |
| spellingShingle | P. D. Ditlevsen K. K. Andersen A. Svensson The DO-climate events are probably noise induced: statistical investigation of the claimed 1470 years cycle Climate of the Past |
| title | The DO-climate events are probably noise induced: statistical investigation of the claimed 1470 years cycle |
| title_full | The DO-climate events are probably noise induced: statistical investigation of the claimed 1470 years cycle |
| title_fullStr | The DO-climate events are probably noise induced: statistical investigation of the claimed 1470 years cycle |
| title_full_unstemmed | The DO-climate events are probably noise induced: statistical investigation of the claimed 1470 years cycle |
| title_short | The DO-climate events are probably noise induced: statistical investigation of the claimed 1470 years cycle |
| title_sort | do climate events are probably noise induced statistical investigation of the claimed 1470 years cycle |
| url | http://www.clim-past.net/3/129/2007/cp-3-129-2007.pdf |
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