Quote:The world is getting warmer; we know this. But new claims suggesting that the temperature increase could be as high as 7 °C should be roundly ignored.


You may have already read about the study from which those numbers are drawn. Published in Nature, it suggests that the world is on course to experience warming in the next 1,000 years that’s beyond that of most conventional predictions. Keen to acknowledge the worst, some news outlets unquestioningly published the results, based solely upon Nature’s press release.

The research is impressive in some regards. It reconstructs the average surface temperature of Earth over the past two million years—far longer than the previous longest temperature record, which stretched back just 22,000 years (since about the end of the last Ice Age). That alone will be useful to climate scientists.

But the paper also uses its own data to estimate the sensitivity of Earth’s surface temperature to levels of carbon dioxide—and there it becomes unstuck. As Gizmodo points out, the research assumes that a historic correlation between global temperature and greenhouse-gas radiative forcing will hold in the future. The upshot is the suggestion that, based on today’s greenhouse-gas levels, a massive and unavoidable temperature rise of 3 to 7 °C will occur in the future.

But experts don’t think that’s valid.

Speaking to Ars Technica, Richard Alley from Penn State said the predictions made by the researchers represented “an upper limit, because we know that some of the temperature change was not caused by greenhouse gases.” Speaking to Gizmodo, Gavin Schmidt, director of NASA’s Goddard Institute for Space Studies, was more blunt, saying: “This is simply wrong.”


The take-home message: the world is getting warmer—but not that much warmer. Chill out, people.

Quote:But when Homewood was then able to check Giss’s figures against the original data from which they were derived, he found that they had been altered. Far from the new graph showing any rise, it showed temperatures in fact having declined over those 65 years by a full degree. When he did the same for the other two stations, he found the same. In each case, the original data showed not a rise but a decline.

Homewood had in fact uncovered yet another example of the thousands of pieces of evidence coming to light in recent years that show that something very odd has been going on with the temperature data relied on by the world's scientists. And in particular by the UN’s Intergovernmental Panel on Climate Change (IPCC), which has driven the greatest and most costly scare in history: the belief that the world is in the grip of an unprecedented warming.

(09-28-2016, 02:48 AM)guohua Wrote: Senona, you know Of-Course that Al Gore and Obama and The Pope are going to put a Hit Out On Richard Alley and Threaten NASA with More Funding Cuts for Not Towing The Elitist Agenda!

(09-28-2016, 03:40 AM)Daitengu Wrote: Ahhh .... but if they admit their climate change hoax ..... theyll have to find a new way to scare everyone and cheat everyone out of their hard earned money .....