-0.8 -0.7 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 0.0 0.1 0.2 Temperature Anomaly (oC) 20 40 60 80 100 Sunspot Numbers (11-year smoothed) Basic Intermediate Advanced The sun has been cooling yet the planet has been warming Problemfor sun causingwarming Since the 1980s, the sun has been cooling while Earth has been warming Solar Activity(sunspot numbers11-year smoothed) Surface Temperature(GISS)