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Long-term variations in the heliosphere

Published online by Cambridge University Press:  27 November 2018

Mathew J. Owens Open the ORCID record for Mathew J. Owens [Opens in a new window] ,
Mike Lockwood ,
Pete Riley  and
Luke Barnard
Mathew J. Owens
Affiliation:
Department of Meteorology, University of Reading, Reading RG6 6BB, UK email: m.j.owens@reading.ac.uk
Mike Lockwood
Affiliation:
Department of Meteorology, University of Reading, Reading RG6 6BB, UK email: m.j.owens@reading.ac.uk
Pete Riley
Affiliation:
Predictive Science Inc., 9990 Mesa Rim Rd, Suite 170, San Diego, CA 92121, USA
Luke Barnard
Affiliation:
Department of Meteorology, University of Reading, Reading RG6 6BB, UK email: m.j.owens@reading.ac.uk
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Abstract

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Reconstructions of long-term solar variability underpin our understanding of the solar dynamo, potential tropospheric climate implications and future space weather scenarios. Prior to direct spacecraft measurements of the heliospheric magnetic field (HMF) and solar wind, accurate annual reconstructions are possible using geomagnetic and sunspot records. On longer timescales, information about the HMF can be extracted from cosmogenic radionuclide records, particularly 14C in ancient trees and 10Be in ice sheets. These proxies, and what they reveal about the HMF and solar wind, are briefly reviewed here.

Keywords

solar windheliospheresolar-terrestrial relationssolar variability

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