Advanced Computer Models Suggest Most Global Warming Is From Natural Forces

By Michael Bastach

The world would have warmed throughout the 20th Century even without carbon dioxide emissions from the industrial revolution, according to a new study. “This suggests that even if there had been no industrial revolution and burning of fossil fuels, there would have still been some warming through the twentieth century – to at least 1980,” according to lead author Jennifer Marohasy. The world was about as warm in 1980 as it was during the Middle Ages when the Vikings settled Greenland and “when men dressed in tunics and built grand cathedrals with tall spires,” Marohasy wrote in The Spectator Australia on Tuesday, summarizing her study’s results. Climate scientists Marohasy and John Abbot used a sophisticated artificial intelligence-like computer system to see what temperatures may have done since 1830 without human influence based on proxy climate records going back to 50 A.D.  What’s interesting is Marohasy’s study, like most proxy data, shows temperatures declining after 1980. That’s in direct conflict with actual temperature observations, which show a continued rise in global average temperature through to 1998 before it leveled off for about 15 years. This is called the “divergence problem,” Marohasy wrote. “Rather than address this issue, key climate scientists, have been known to graft instrumental temperature series onto the proxy record from 1980 to literally ‘hide the decline.’”...more