Clouds and 7Be: Perusing connections between cosmic rays and climate

Jim Hedfors, Ala Aldahan, Abdulhadi Kulan, Goran Possnert, Karl Goran Karlsson, Ingemar Vintersved

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


Time series data on 7Be, precipitation, temperature, and satellite imagery of cloud cover over Scandinavia, together with cosmic ray and sunspot activity, were used to elucidate the relationship between cosmic rays and clouds, and ultimately climate change. The results indicate a coherent negative correlation between total cloud cover and 7Be on intrdseasonal, seasonal, and decadal scales. Although the reasons behind this correlation are unclear, a full-scale implication of this feature is in the possible use of 7Be and 10Be records for proxy paleo-reconstruction of total cloud cover. This is a strongly needed, but generally difficult to quantify parameter in climate models.

Original languageEnglish
Article numberD02208
JournalJournal of Geophysical Research Atmospheres
Issue number2
Publication statusPublished - Jan 27 2006
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Materials Chemistry
  • Polymers and Plastics
  • Physical and Theoretical Chemistry


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