Solar, volcanic, and CO2 forcing of recent climatic changes

Ronald L. Gilliland

Research output: Contribution to journalArticlepeer-review

81 Scopus citations


The climate, as represented by the mean Northern Hemisphere temperature, has shown substantial changes within the past century. The temperature record is utilized as a means of elucidating the relative importance of anthropogenic CO2 increase, volcanic aerosols, and possible solar insolation variations in externally forcing climate changes. Solar luminosity variations, suggested by observed solar radius variations on an ≈ 80 yr time scale, allow a self-consistent explanation of the hemispheric temperature trends. Evidence for solar influences on the climate is also found on the shorter 11 and 22 yr time scales present in solar activity cycles.

Original languageEnglish (US)
Pages (from-to)111-131
Number of pages21
JournalClimatic Change
Issue number2
StatePublished - Jun 1982

All Science Journal Classification (ASJC) codes

  • Global and Planetary Change
  • Atmospheric Science


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