News of the WeekClimate Change

Joining Forces to Pump Up a Variable Sun's Climate Effects

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Science  28 Aug 2009:
Vol. 325, Issue 5944, pp. 1058-1059
DOI: 10.1126/science.325_1058b

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In the past, global climate modelers could realistically simulate either the atmosphere or the ocean, not both at once. Now a new "hybrid" model at the National Center for Atmospheric Research manages the feat. Its developers say it shows how minute changes in solar radiation can cause major climate swings such as the medieval Little Ice Age. But other researchers say such claims are premature.