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Paleoclimate: Toward solving the UV puzzle

  • Jelte Rozema
  • Bas van Geel
  • Lars Olof Björn
  • Judith Lean
  • Sasha Madronich
Publishing year: 2002
Language: English
Pages: 1621-1622
Publication/Series: Science
Volume: 296
Issue: 5573
Document type: Journal article (letter)
Publisher: The American Association for the Advancement of Science

Abstract english

Decreases in stratospheric ozone caused by chlorofluorocarbons released into the atmosphere lead to an increase in harmful ultraviolet (UV) light received at Earths surface. But UV and ozone also vary naturally as a result of changes in solar activity. In their Perspective, Rozema et al. chart recent efforts to elucidate the relation among the solar UV spectrum, ozone concentrations, and harmful surface UV on decadal and longer time scales. Biological proxies (phenolic compounds in pollen and spores) can be used to reconstruct historical UV-B and total ozone.


  • Biological Sciences


  • Photobiology
  • ISSN: 1095-9203
Lars Olof Björn
E-mail: lars_olof [dot] bjorn [at] biol [dot] lu [dot] se

Professor emeritus

Molecular Cell Biology

+46 46 222 72 53