Arctic Climate Impact Assessment

Arctic Council

Ice cores and other evidence of climate conditions in the distant past provide evidence that rising atmospheric carbon dioxide levels are associated with rising global temperatures. Human activities, primarily the burning of fossil fuels, and secondarily clearing of land, have increased the concentration of carbon dioxide, methane, and other heat-trapping ("greenhouse") gases in the atmosphere.

study

Solar Variability Unlikely Caused Recent Warming

Max Planck Institute, U. Oulu
Lead Authors: S. K. Solanki, I. G. Usoskin
Where published: Nature

Solar variability is unlikely to have been the dominant cause of the strong warming during the past three decades

Study