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Sudden cosmic ray decreases: No change of global cloud cover
Author(s) -
Calogovic J.,
Albert C.,
Arnold F.,
Beer J.,
Desorgher L.,
Flueckiger E. O.
Publication year - 2010
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2009gl041327
Subject(s) - cosmic ray , forbush decrease , cloud cover , atmosphere (unit) , physics , astrophysics , environmental science , cloud computing , atmospheric sciences , astronomy , meteorology , computer science , coronal mass ejection , operating system , quantum mechanics , magnetic field , solar wind
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.