julianh72
10-08-2015, 04:51 PM
A recalibration of data describing the number of sunspots and groups of sunspots on the surface of the Sun shows that there is no significant long-term upward trend in solar activity since 1700, contrary to what was previously thought.
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Clette and colleagues’ results make it difficult to explain the observed changes in the climate that started in the 18th century and extended through the industrial revolution to the 20th century as being significantly influenced by natural solar trends. According to the researchers, they have identified the apparent upward trend of solar activity between the 18th century and the late 20th century as a major calibration error in the GSN. Now that this error has been corrected, solar activity appears to have remained relatively stable since the 1700s.
http://physicsworld.com/cws/article/news/2015/aug/07/new-sunspot-analysis-shows-rising-global-temperatures-not-linked-to-solar-activity
http://www.sidc.be/press/01/welcome.html
...
Clette and colleagues’ results make it difficult to explain the observed changes in the climate that started in the 18th century and extended through the industrial revolution to the 20th century as being significantly influenced by natural solar trends. According to the researchers, they have identified the apparent upward trend of solar activity between the 18th century and the late 20th century as a major calibration error in the GSN. Now that this error has been corrected, solar activity appears to have remained relatively stable since the 1700s.
http://physicsworld.com/cws/article/news/2015/aug/07/new-sunspot-analysis-shows-rising-global-temperatures-not-linked-to-solar-activity
http://www.sidc.be/press/01/welcome.html