based on the increase of solar activity during the twentieth century, it should account for between half to two-thirds of all climate change.
based on the increase of solar activity during the twentieth century, it should account for between half to two-thirds of all climate change.
solar activity and climate:103
in 2000, lassen and thejll updated their 1991 research and concluded that while the solar cycle accounted for about half the temperature rise since 1900, it failed to explain a rise of 0.4 °c since 1980.