The DO-climate events are probably noise induced: statistical investigation of the claimed 1470 years cycle
International audience 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...
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ftccsdartic:oai:HAL:hal-00298070v1 2024-02-11T10:04:21+01:00 The DO-climate events are probably noise induced: statistical investigation of the claimed 1470 years cycle Ditlevsen, P. D. Andersen, K. K. Svensson, A. Niels Bohr Institute Copenhagen (NBI) Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH) 2007-02-28 https://hal.science/hal-00298070 https://hal.science/hal-00298070/document https://hal.science/hal-00298070/file/cp-3-129-2007.pdf en eng HAL CCSD European Geosciences Union (EGU) hal-00298070 https://hal.science/hal-00298070 https://hal.science/hal-00298070/document https://hal.science/hal-00298070/file/cp-3-129-2007.pdf info:eu-repo/semantics/OpenAccess ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-00298070 Climate of the Past, 2007, 3 (1), pp.129-134 [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2007 ftccsdartic 2024-01-14T00:35:45Z International audience 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. Article in Journal/Newspaper Greenland Greenland ice cores NGRIP Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Greenland |
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Open Polar |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Ditlevsen, P. D. Andersen, K. K. Svensson, A. The DO-climate events are probably noise induced: statistical investigation of the claimed 1470 years cycle |
topic_facet |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience 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. |
author2 |
Niels Bohr Institute Copenhagen (NBI) Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH) |
format |
Article in Journal/Newspaper |
author |
Ditlevsen, P. D. Andersen, K. K. Svensson, A. |
author_facet |
Ditlevsen, P. D. Andersen, K. K. Svensson, A. |
author_sort |
Ditlevsen, P. D. |
title |
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_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_sort |
do-climate events are probably noise induced: statistical investigation of the claimed 1470 years cycle |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-00298070 https://hal.science/hal-00298070/document https://hal.science/hal-00298070/file/cp-3-129-2007.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice cores NGRIP |
genre_facet |
Greenland Greenland ice cores NGRIP |
op_source |
ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-00298070 Climate of the Past, 2007, 3 (1), pp.129-134 |
op_relation |
hal-00298070 https://hal.science/hal-00298070 https://hal.science/hal-00298070/document https://hal.science/hal-00298070/file/cp-3-129-2007.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1790600936362606592 |