The recurrence time of Dansgaard-Oeschger events and limits on the possible periodic component

By comparing the high-resolution isotopic records from the GRIP and NGRIP icecores, we approximately separate the climate signal from local noise to obtain an objective criterion for defining Dansgaard-Oeschger events. Our analysis identifies several additional short lasting events, increasing the t...

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Bibliographic Details
Main Authors: Ditlevsen, Peter D., Kristensen, Mikkel S., Andersen, Katrine K.
Format: Text
Language:unknown
Published: arXiv 2005
Subjects:
Chaotic Dynamics nlin.CD
Atmospheric and Oceanic Physics physics.ao-ph
FOS Physical sciences
Dansgaard-Oeschger events
NGRIP
Online Access:https://dx.doi.org/10.48550/arxiv.nlin/0505031
https://arxiv.org/abs/nlin/0505031
id ftdatacite:10.48550/arxiv.nlin/0505031
record_format openpolar
spelling ftdatacite:10.48550/arxiv.nlin/0505031 2023-05-15T15:59:59+02:00 The recurrence time of Dansgaard-Oeschger events and limits on the possible periodic component Ditlevsen, Peter D. Kristensen, Mikkel S. Andersen, Katrine K. 2005 https://dx.doi.org/10.48550/arxiv.nlin/0505031 https://arxiv.org/abs/nlin/0505031 unknown arXiv https://dx.doi.org/10.1175/jcli3437.1 Assumed arXiv.org perpetual, non-exclusive license to distribute this article for submissions made before January 2004 http://arxiv.org/licenses/assumed-1991-2003/ Chaotic Dynamics nlin.CD Atmospheric and Oceanic Physics physics.ao-ph FOS Physical sciences article-journal Article ScholarlyArticle Text 2005 ftdatacite https://doi.org/10.48550/arxiv.nlin/0505031 https://doi.org/10.1175/jcli3437.1 2022-04-01T16:05:55Z By comparing the high-resolution isotopic records from the GRIP and NGRIP icecores, we approximately separate the climate signal from local noise to obtain an objective criterion for defining Dansgaard-Oeschger events. Our analysis identifies several additional short lasting events, increasing the total number of DO events to 27 in the period 12-90 kyr BP. The quasi-regular occurrence of the DO events could indicate a stochastic or coherent resonance mechanism governing their origin. From the distribution of waiting times we obtain a statistical upper bound on the strength of a possible periodic forcing. This finding indicates that the climate shifts are purely noise driven with no underlying periodicity. : 9 figures Text Dansgaard-Oeschger events NGRIP DataCite Metadata Store (German National Library of Science and Technology)
institution Open Polar
collection DataCite Metadata Store (German National Library of Science and Technology)
op_collection_id ftdatacite
language unknown
topic Chaotic Dynamics nlin.CD
Atmospheric and Oceanic Physics physics.ao-ph
FOS Physical sciences
spellingShingle Chaotic Dynamics nlin.CD
Atmospheric and Oceanic Physics physics.ao-ph
FOS Physical sciences
Ditlevsen, Peter D.
Kristensen, Mikkel S.
Andersen, Katrine K.
The recurrence time of Dansgaard-Oeschger events and limits on the possible periodic component
topic_facet Chaotic Dynamics nlin.CD
Atmospheric and Oceanic Physics physics.ao-ph
FOS Physical sciences
description By comparing the high-resolution isotopic records from the GRIP and NGRIP icecores, we approximately separate the climate signal from local noise to obtain an objective criterion for defining Dansgaard-Oeschger events. Our analysis identifies several additional short lasting events, increasing the total number of DO events to 27 in the period 12-90 kyr BP. The quasi-regular occurrence of the DO events could indicate a stochastic or coherent resonance mechanism governing their origin. From the distribution of waiting times we obtain a statistical upper bound on the strength of a possible periodic forcing. This finding indicates that the climate shifts are purely noise driven with no underlying periodicity. : 9 figures
format Text
author Ditlevsen, Peter D.
Kristensen, Mikkel S.
Andersen, Katrine K.
author_facet Ditlevsen, Peter D.
Kristensen, Mikkel S.
Andersen, Katrine K.
author_sort Ditlevsen, Peter D.
title The recurrence time of Dansgaard-Oeschger events and limits on the possible periodic component
title_short The recurrence time of Dansgaard-Oeschger events and limits on the possible periodic component
title_full The recurrence time of Dansgaard-Oeschger events and limits on the possible periodic component
title_fullStr The recurrence time of Dansgaard-Oeschger events and limits on the possible periodic component
title_full_unstemmed The recurrence time of Dansgaard-Oeschger events and limits on the possible periodic component
title_sort recurrence time of dansgaard-oeschger events and limits on the possible periodic component
publisher arXiv
publishDate 2005
url https://dx.doi.org/10.48550/arxiv.nlin/0505031
https://arxiv.org/abs/nlin/0505031
genre Dansgaard-Oeschger events
NGRIP
genre_facet Dansgaard-Oeschger events
NGRIP
op_relation https://dx.doi.org/10.1175/jcli3437.1
op_rights Assumed arXiv.org perpetual, non-exclusive license to distribute this article for submissions made before January 2004
http://arxiv.org/licenses/assumed-1991-2003/
op_doi https://doi.org/10.48550/arxiv.nlin/0505031
https://doi.org/10.1175/jcli3437.1
_version_ 1766395864203395072

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