New data have more accurately quantifi ed changes in solar spectral fl uxes over a broad range of wavelengths in association with changing solar activity. (realclimate.org)
This early empirical study by Neuberger supports Svensmark's hypothesis that changing solar activity creates changing lower cloud cover, which causes changing temperatures. (drtimball.com)
Their findings indicated that, overall, the contribution of changing solar activity, either directly or through cosmic rays, was even less and can not have contributed more than 10 percent to global warming in the 20th century. (scientificamerican.com)