An overview of century time-scale variability in the climate system: Observations and models

Stocker, Thomas F. (1996). An overview of century time-scale variability in the climate system: Observations and models. In: Anderson, David L. T.; Willebrand, Jürgen (eds.) Decadal climate variability: dynamics and predictability. NATO ASI Series: Vol. 44 (pp. 379-406). Springer 10.1007/978-3-662-03291-6_9

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Estimates of the development of the Earth’s climate subject to anthropogenic forcing depend critically on our knowledge of natural climate variability on time scales of decades to centuries. Time scales extracted from high-resolution proxy records and observations indicate that the spectrum of climate variability exhibits significant power in the range of decades to centuries superimposed on a red-noise continuum. The classical view of climate variability is based on the concept that observed fluctuations have their origin in periodic forcings on the same time scale, i.e. that the climate system behaves like a linear system that is externally forced. The present sensitivity of the climate system, however, would require strong positive feedback mechanisms to translate the weak forcing signals (e.g. variability of solar irradiation) into detectable fluctuations in observed and proxy variables. Instead, it is proposed that these fluctuations are linked to interactions within and between the different climate system components. An overview of recent modeling results and the discussion of mechanisms involved show that such interactions internal to the climate system cannot only exhibit the correct time scales but also easily account for the amplitudes observed.

Item Type:	Book Section (Book Chapter)
Division/Institute:	08 Faculty of Science > Physics Institute > Climate and Environmental Physics
UniBE Contributor:	Stocker, Thomas
Subjects:	500 Science > 530 Physics
ISBN:	978-3-540-61459-3
Series:	NATO ASI Series
Publisher:	Springer
Language:	English
Submitter:	BORIS Import 2
Date Deposited:	03 Jul 2024 11:06
Last Modified:	03 Jul 2024 11:06
Publisher DOI:	10.1007/978-3-662-03291-6_9
Additional Information:	Proceedings of the NATO Advanced Study Institute "Decadal Climate Variability: Dynamics and Predictability", held at Les Houches, France, February 13 - 24, 1995
URI:	https://boris.unibe.ch/id/eprint/161134