Zobrazeno 1 - 10
of 10
pro vyhledávání: '"P. D. Ditlevsen"'
Publikováno v:
Earth System Dynamics, Vol 12, Pp 819-835 (2021)
We propose a conceptual model comprising a cascade of tipping points as a mechanism for past abrupt climate changes. In the model, changes in a control parameter, which could for instance be related to changes in the atmospheric circulation, induce s
Externí odkaz:
https://doaj.org/article/b6c057174a4044c38e3c68a42b0b9c6a
Autor:
J. Lohmann, P. D. Ditlevsen
Publikováno v:
Climate of the Past, Vol 15, Pp 1771-1792 (2019)
The strongest mode of centennial to millennial climate variability in the paleoclimatic record is represented by Dansgaard–Oeschger (DO) cycles. Despite decades of research, their dynamics and physical mechanisms remain poorly understood. Valuable
Externí odkaz:
https://doaj.org/article/221bbf3068904461bdeb215dc61d01d5
Autor:
J. Lohmann, P. D. Ditlevsen
Publikováno v:
Climate of the Past, Vol 14, Pp 609-617 (2018)
Dansgaard–Oeschger (DO) events constitute the most pronounced mode of centennial to millennial climate variability of the last glacial period. Since their discovery, many decades of research have been devoted to understand the origin and nature
Externí odkaz:
https://doaj.org/article/5ce473b76a004efdb37621aa6cdf090e
Publikováno v:
Climate of the Past, Vol 3, Iss 1, Pp 129-134 (2007)
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 periodi
Externí odkaz:
https://doaj.org/article/2169126c7236477cb0f4c8c1d2e05962
Publikováno v:
Journal of Physics: Complexity, Vol 5, Iss 3, p 035015 (2024)
It is well-known that even for fairly simple deterministic nonlinear systems, exact prediction of future state is, on average, impossible beyond some small multiple of the Lyapunov time that quantifies the rate of separation of trajectories within an
Externí odkaz:
https://doaj.org/article/206326108072442cadc353db9eeae435
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 periodi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24711b9c074f34e004111e703264a73c
https://doi.org/10.5194/cpd-2-1277-2006
https://doi.org/10.5194/cpd-2-1277-2006
Autor:
P. D. Ditlevsen
Publikováno v:
Fluid Mechanics and Its Applications ISBN: 9789401061513
The climate of the Earth is the long term mean of the state of the atmospheric — and oceanic flows. As a practice, more or less arbitrarily, 30 years averages defines climate. Is this long term mean at all influenced by the much shorter time — an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7fce3839bad9c26c945a14e0518b0cf8
https://doi.org/10.1007/978-94-011-5118-4_112
https://doi.org/10.1007/978-94-011-5118-4_112
Autor:
P. Giuliani, P. D. Ditlevsen
Publikováno v:
Physics of Fluids. 13:3508-3509
In helical turbulence a linear cascade of helicity accompanying the energy cascade has been suggested. Since energy and helicity have different dimensionality we suggest the existence of a characteristic inner scale, $\xi=k_H^{-1}$, for helicity diss
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c91177c1430beb5ef5ea0b58ce992c2b
https://doi.org/10.1063/1.1404138
https://doi.org/10.1063/1.1404138
Autor:
Zhi-Gang Shao, Peter D. Ditlevsen
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-8 (2016)
Natural climate variability and persistency are reflected in the scaling properties of climate records. Here, the authors show that the scaling properties of interglacial and glacial climates are distinctively different: The former is monofractal whi
Externí odkaz:
https://doaj.org/article/559affcb071e4d878486bbf0bafaef71
Autor:
Peter D. Ditlevsen, Peter Ashwin
Publikováno v:
Frontiers in Physics, Vol 6 (2018)
Through the past few million years large ice sheets have repeatedly grown and disappeared on the Northern hemisphere. These are the Pleistocene glaciations. They are related to the changing solar heating of the Earth due to changes in Earth's orbit a
Externí odkaz:
https://doaj.org/article/41d71ec3b3b54b16ae8d10d1f9404794