|Another in our series of exposing the flawed science of cartoonist Cook's flawed UNSkeptical UNScience (SS) and the so-called |
The sun’s output varies in several ways on many time scales (including the 11-, 22 and 80-year solar cycles), with concomitant effects on Earth’s climate. While changes in visible radiation are small, changes in particle flux and magnetic field are known to exercise a strong climatic effect. More than 50% of the 0.8ºC rise in AGT observed during the 20th century can be attributed to solar change.
|Cumulative solar irradiance (blue) and volcanic forcing (red) is
highly correlated with HadCRU global temperature and explains
the trend in temperature since 1950.
The direct solar irradiance (orange) is uncorrelated with temperature.