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The Influence of Solar Activity and Cosmic Rays on Terrestrial Clouds and Global Warming

Published online by Cambridge University Press:  13 May 2016

E. Pallé Bagó  and
C. J. Butler
E. Pallé Bagó
Affiliation:
Armagh Observatory, College Hill, BT61 9DG. Armagh, N. Ireland
C. J. Butler
Affiliation:
Armagh Observatory, College Hill, BT61 9DG. Armagh, N. Ireland

Abstract

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We analyse the new ISCCP (International Satellite Cloud Climatology Project) D2 cloud data to ascertain whether or not a connection between cosmic ray flux and cloud cover exists. Our results indicate that only the low-level cloud follows solar activity over the full period, 1983-1994. Using several proxies for solar activity and the radiative forcing for the ISCCP cloud types, we estimate the possible impact that such a solar-terrestrial connection may have on climate. We conclude that, possibly excluding the most recent decades, much of the warming of the past century can be quantitatively accounted for by the direct and indirect effects of solar activity.

Type
Session VII: Energetic Particles and the Local Interstellar Medium
Information
Symposium - International Astronomical Union , Volume 203: Recent Insights into the Physics of the Sun and Heliosphere: Highlights from Soho and Other Space Missions , 2001 , pp. 602 - 605
Copyright
Copyright © Astronomical Society of the Pacific 2001 

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