Sudden cosmic ray decreases: No change of global cloud cover
Article first published online: 3 FEB 2010
Copyright 2010 by the American Geophysical Union.
Geophysical Research Letters
Volume 37, Issue 3, February 2010
How to Cite
2010), Sudden cosmic ray decreases: No change of global cloud cover, Geophys. Res. Lett., 37, L03802, doi:10.1029/2009GL041327., , , , , and (
- Issue published online: 3 FEB 2010
- Article first published online: 3 FEB 2010
- Manuscript Accepted: 4 JAN 2010
- Manuscript Revised: 22 DEC 2009
- Manuscript Received: 14 OCT 2009
- forbush decrease;
- cosmic rays
 Currently a cosmic ray cloud connection (CRC) hypothesis is subject of an intense controversial debate. It postulates that galactic cosmic rays (GCR) intruding the Earth's atmosphere influence cloud cover. If correct it would have important consequences for our understanding of climate driving processes. Here we report on an alternative and stringent test of the CRC-hypothesis by searching for a possible influence of sudden GCR decreases (so-called Forbush decreases) on clouds. We find no response of global cloud cover to Forbush decreases at any altitude and latitude.