Sun cycles seen not key to recent global warming
Wed Apr 23, 2008 6:15pm EDT By Bruce Nichols
SAN ANTONIO, Texas (Reuters) – Satellite data show that changes in the sun are contributing to global warming but to a smaller extent than human activity, a space scientist at the Naval Research Laboratory in Washington told a group of petroleum geologists on Wednesday.
“The sun is playing a role that you can detect, but it’s not the dominant role,” Judith Lean told a crowded session at the 2008 convention of the American Association of Petroleum Geologists in San Antonio.
Climate-change skeptics have suggested that solar cycles may be more responsible than human activity for increasing global temperature. But Lean said her findings showed “the sun is a factor of 10 less than the anthropogenic.”