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Short-term changes in global cloud cover and in cosmic radiation

Brown, B.H. (2008) Short-term changes in global cloud cover and in cosmic radiation. Journal of Atmopsheric and Solar-Terrestrial Physics, 70 (7). pp. 1122-1131. ISSN 1364-6826

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Abstract

Galactic cosmic rays (GCR) have been suggested as a possible contributory mechanism to cloud formation. If these are significant then, in addition to the similarity between long-term (years) changes in GCR and cloud cover, there should also be a similarity over shorter (days) time scales. This paper reports an analysis of changes in global cloud cover and GCR recorded at 3 hourly intervals over 22 years. There is a significant correlation between short-term changes in low cloud cover over northern and southern hemispheres, consistent with about 3% of the variation arising from common factors. However, GCR is not a major factor responsible for cloud cover changes. There is an association between short-term changes in low cloud cover and galactic cosmic radiation over a period of several days. This could arise if approximately 3% of the variations in cloud cover resulted from GCR.

Item Type: Article
Copyright, Publisher and Additional Information: © 2008 Elsevier Ltd. This is an author produced version of a paper published in Journal of Atmopsheric and Solar-Terrestrial Physics. Uploaded in accordance with the publisher's self-archiving policy.
Institution: The University of Sheffield
Academic Units: The University of Sheffield > Faculty of Medicine, Dentistry and Health (Sheffield) > School of Medicine (Sheffield)
Depositing User: Sherpa Assistant
Date Deposited: 10 Jul 2008 11:03
Last Modified: 08 Feb 2013 16:56
Published Version: http://dx.doi.org/10.1016/j.jastp.2008.02.003
Status: Published
Publisher: Pergamon-Elsevier Science Ltd
Refereed: Yes
Identification Number: 10.1016/j.jastp.2008.02.003
URI: http://eprints.whiterose.ac.uk/id/eprint/4060

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