Solar forced Dansgaard-Oeschger events and their phase relation with solar proxies

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Solar forced Dansgaard-Oeschger events and their phase relation with solar proxies. / Ditlevsen, Peter; Braun, H.; Chialvo, D. R.

In: Geophysical Research Letters, Vol. 35, No. 6, 2008, p. L06703.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Ditlevsen, P, Braun, H & Chialvo, DR 2008, 'Solar forced Dansgaard-Oeschger events and their phase relation with solar proxies', Geophysical Research Letters, vol. 35, no. 6, pp. L06703. https://doi.org/10.1029/2008GL033414

APA

Ditlevsen, P., Braun, H., & Chialvo, D. R. (2008). Solar forced Dansgaard-Oeschger events and their phase relation with solar proxies. Geophysical Research Letters, 35(6), L06703. https://doi.org/10.1029/2008GL033414

Vancouver

Ditlevsen P, Braun H, Chialvo DR. Solar forced Dansgaard-Oeschger events and their phase relation with solar proxies. Geophysical Research Letters. 2008;35(6):L06703. https://doi.org/10.1029/2008GL033414

Author

Ditlevsen, Peter ; Braun, H. ; Chialvo, D. R. / Solar forced Dansgaard-Oeschger events and their phase relation with solar proxies. In: Geophysical Research Letters. 2008 ; Vol. 35, No. 6. pp. L06703.

Bibtex

@article{7e2b5990ed3611ddbf70000ea68e967b,
title = "Solar forced Dansgaard-Oeschger events and their phase relation with solar proxies",
abstract = "North Atlantic climate during glacial times was characterized by large-amplitude switchings, the Dansgaard-Oeschger (DO) events, with an apparent tendency to recur preferably in multiples of about 1470 years. Recent work interpreted these intervals as resulting from a subharmonic response of a highly nonlinear system to quasi-periodic solar forcing plus noise. This hypothesis was challenged as inconsistent with the observed variability in the phase relation between proxies of solar activity and Greenland climate. Here we reject the claim of inconsistency by showing that this phase variability is a robust, generic feature of the nonlinear dynamics of DO events, as described by a model. This variability is expected from the fact that the events are threshold crossing events, resulting from a cooperative process between the periodic forcing and the noise. This process produces a fluctuating phase relation with the periodic forcing, consistent with proxies of solar activity and Greenland climate. Udgivelsesdato: 25 March",
author = "Peter Ditlevsen and H. Braun and Chialvo, {D. R.}",
year = "2008",
doi = "10.1029/2008GL033414",
language = "English",
volume = "35",
pages = "L06703",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "Wiley-Blackwell",
number = "6",

}

RIS

TY - JOUR

T1 - Solar forced Dansgaard-Oeschger events and their phase relation with solar proxies

AU - Ditlevsen, Peter

AU - Braun, H.

AU - Chialvo, D. R.

PY - 2008

Y1 - 2008

N2 - North Atlantic climate during glacial times was characterized by large-amplitude switchings, the Dansgaard-Oeschger (DO) events, with an apparent tendency to recur preferably in multiples of about 1470 years. Recent work interpreted these intervals as resulting from a subharmonic response of a highly nonlinear system to quasi-periodic solar forcing plus noise. This hypothesis was challenged as inconsistent with the observed variability in the phase relation between proxies of solar activity and Greenland climate. Here we reject the claim of inconsistency by showing that this phase variability is a robust, generic feature of the nonlinear dynamics of DO events, as described by a model. This variability is expected from the fact that the events are threshold crossing events, resulting from a cooperative process between the periodic forcing and the noise. This process produces a fluctuating phase relation with the periodic forcing, consistent with proxies of solar activity and Greenland climate. Udgivelsesdato: 25 March

AB - North Atlantic climate during glacial times was characterized by large-amplitude switchings, the Dansgaard-Oeschger (DO) events, with an apparent tendency to recur preferably in multiples of about 1470 years. Recent work interpreted these intervals as resulting from a subharmonic response of a highly nonlinear system to quasi-periodic solar forcing plus noise. This hypothesis was challenged as inconsistent with the observed variability in the phase relation between proxies of solar activity and Greenland climate. Here we reject the claim of inconsistency by showing that this phase variability is a robust, generic feature of the nonlinear dynamics of DO events, as described by a model. This variability is expected from the fact that the events are threshold crossing events, resulting from a cooperative process between the periodic forcing and the noise. This process produces a fluctuating phase relation with the periodic forcing, consistent with proxies of solar activity and Greenland climate. Udgivelsesdato: 25 March

U2 - 10.1029/2008GL033414

DO - 10.1029/2008GL033414

M3 - Journal article

VL - 35

SP - L06703

JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 6

ER -

ID: 9970663