Anthropogenic cooling advocates have long scoffed at the idea of solar activity being a factor in global warming. Now, a new study from NASA has confirmed the theory of solar cycles affecting global temperatures. NASA still clings the the unproven theory that greenhouse gases have been the dominant influence on recent climate change.
Some researchers believe that the solar cycle influences global climate changes. They attribute recent warming trends to cyclic variation. Skeptics, though, argue that there's little hard evidence of a solar hand in recent climate changes.
Now, a new research report from a surprising source may help to lay this skepticism to rest. A study from NASA’s Goddard Space Flight Center in Greenbelt, Maryland looking at climate data over the past century has concluded that solar variation has made a significant impact on the Earth's climate. The report concludes that evidence for climate changes based on solar radiation can be traced back as far as the Industrial Revolution.
The report can be read here. ScienceDaily has an article here.
Past studies have shown that sunspot numbers correspond to warming or cooling trends. The twentieth century has featured heightened activity, indicating a warming trend. (Source: Wikimedia Commons)