Ja sag mal… Noch eine neue Studie aus den Geophysical Research Letters: “Charles Camp and Ka Kit Tung of the University of Washington’s department of applied mathematics said that to accurately assess effects from human sources on the planet’s climate, scientists must first be able to quantify the contribution of natural variation in solar irradiance to temperature changes…They determined that times of high solar activity are on average 0.2 degrees Celsius warmer than times of low solar activity, and that there is a polar amplification of the warming. That finding is believed the first to document a statistically significant globally coherent temperature response to the solar cycle, the authors note.”