Be-10 as an indicator of solar variability and climate

Beer, J.; Joos, F.; Lukasczyk, C.; Mende, W.; Rodriguez, J.; Siegenthaler, U.; Stellmacher, R. (1994). Be-10 as an indicator of solar variability and climate. In: Nesme-Ribes, Elizabeth (ed.) The solar engine and its influence on terrestrial atmosphere and climate. NATO ASI series. I, Global environmental change: Vol. 25 (pp. 221-233). Springer 10.1007/978-3-642-79257-1_14

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The atmospheric production rate of the cosmogenic isotope 10Be is modulated by the solar wind. Spectral analysis of a 560 year long 10Be concentration record from a Greenland ice core shows that this modulation process was active at all times even during quiet sun periods (Maunder minimum). To separate production effects from the effects of transport and deposition processes, three 10Be records of different length and time resolution were used to calculate the expected 14C variations. Comparisons with measured 14C variations show that during the Holocene, for time scales larger than 3 years, the mixing and transport processes played only a minor role. Measurements of these isotopes in terrestrial archives therefore provide information about past solar variability.

Satellite measurements reveal a positive relationship between solar activity and solar irradiance. Comparisons between 10Be in polar ice samples and 14C in tree rings with temperature records show common features which confirm this relationship over the last few centuries.

Item Type:	Book Section (Book Chapter)
Division/Institute:	08 Faculty of Science > Physics Institute > Climate and Environmental Physics
UniBE Contributor:	Joos, Fortunat, Siegenthaler, Urs
Subjects:	500 Science > 530 Physics
ISSN:	1431-7125
ISBN:	978-3-540-58417-9
Series:	NATO ASI series. I, Global environmental change
Publisher:	Springer
Language:	English
Submitter:	BORIS Import 2
Date Deposited:	12 Jul 2022 15:26
Last Modified:	05 Dec 2022 15:54
Publisher DOI:	10.1007/978-3-642-79257-1_14
URI:	https://boris.unibe.ch/id/eprint/160995