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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 2:26 |
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Conference: Bucharest University Faculty of Physics 2003 Meeting
Section: Atmosphere and Earth Science; Environment Protection
Title:
Separating the modes linked to solar forcing
From internal climate variability ar decadal timescales:
Evidences from instrumental, reanalysis and proxy data
Authors:
M. Dima1, G. Lohmann2, Ioana Dima3
Affiliation:
1University of Bucharest, Faculty of Physics, P.O.Box MG-11
2 University of Bremen, Germany
3 University of Seatle , USA
E-mail
Keywords:
Abstract:
The statistical analysis of long-term instrumental and proxy data reveals a distinction between quasi-decadal mode of variability linked to atmosphere-ocean interactions and a mode connected to the sunspot solar cycle. We find the first mode to be the major contributor to the variability in the North Atlantic sea surface temperature field, while the solar cycle plays a more important role in the sea level pressure field and at upper atmospheric level variations. Furthermore, we show that the two different signatures can be detected in a high resolution sediment core located in the Cariaco basin. Thus, the study puts into evidence the distinction between two modes of variability and is important for the understanding of past and present climate variability.
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