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Journal of Atmospheric and Solar-Terrestrial Physics 66 (2004) 17791790 The possible connection between ionization in the atmosphere
 

Summary: Journal of Atmospheric and Solar-Terrestrial Physics 66 (2004) 1779­1790
The possible connection between ionization in the atmosphere
by cosmic rays and low level clouds
E. Palle´ a,Ă, C.J. Butlerb
, K. O'Brienc
a
Big Bear Solar Observatory, New Jersey Institute of Technology, 40386 North Shore Lane, Big Bear City, CA 92314, USA
b
Armagh Observatory, College Hill, BT61 9DG. Armagh, N. Ireland, UK
c
Department of Physics and Astronomy, Northern Arizona University PMB 1019, 2675 W. Hwy. 89A, Sedona, AZ 86336-5240, USA
Received 29 September 2003; received in revised form 23 March 2004; accepted 4 June 2004
Available online 15 September 2004
Abstract
Recent analysis of monthly mean cloud data from the International Satellite Cloud Climatology Project uncovered a
strong correlation between low cloud and the cosmic ray flux for extensive regions of the Earth. Additional data have
been recently released covering the period up to September 2001 with which we have made a new study of the
geographical variation of the correlation between low cloud and predicted ionization level from cosmic rays at an
altitude of 2 km. When analysed globally, we find that the correlations do not correspond to the latitude variation of
cosmic ray flux and they are not field significant. Nonetheless they appear to be marginally field significant over broad

  

Source: Armagh Observatory
New Jersey Institute of Technology, Center for Solar-Terrestrial Research

 

Collections: Physics