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Bill Sloman
Guest
On Saturday, February 8, 2020 at 12:57:03 AM UTC+11, Cursitor Doom wrote:
You'd better post a link to the Encyclopedia Britannica article.
It happens to be wrong. The technology to measure atmospheric CO2 wasn't all that highly developed in 1910, and there are figures for atmospheric CO2 levels from that period which are as high as 400ppm. Once Keeling had worked out how to do it right the errors became fairly obvious.
Greenland and Antarctic ice core data make it fairly clear that the interglacial CO2 level has been about 280 ppm for the last 800,000 years.
It had got up to 315ppm in 1958, when Keeling started doing reliable measurements and it has been rising ever since
https://en.wikipedia.org/wiki/Keeling_Curve
> If that level hasn't changed during the most industrial period in human history then man-made global warming is barely even junk pseudo-science and those who espouse warmist propaganda need to be thought of in the same terms as those other nutcases who believe the world is flat and that the moon landings were faked.
Sadly for your rhetoric, it has changed and it's you who is advancing junk-pseudo-science. It's not even pseudo-science but rather self-interested lying propaganda spread by people who want to keep on digging up and selling fossil carbon as fuel despite the problems created by ever-increasing CO2 levels in teh atmosphere.
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Bill Sloman, Sydney
You'd better post a link to the Encyclopedia Britannica article.
It happens to be wrong. The technology to measure atmospheric CO2 wasn't all that highly developed in 1910, and there are figures for atmospheric CO2 levels from that period which are as high as 400ppm. Once Keeling had worked out how to do it right the errors became fairly obvious.
Greenland and Antarctic ice core data make it fairly clear that the interglacial CO2 level has been about 280 ppm for the last 800,000 years.
It had got up to 315ppm in 1958, when Keeling started doing reliable measurements and it has been rising ever since
https://en.wikipedia.org/wiki/Keeling_Curve
> If that level hasn't changed during the most industrial period in human history then man-made global warming is barely even junk pseudo-science and those who espouse warmist propaganda need to be thought of in the same terms as those other nutcases who believe the world is flat and that the moon landings were faked.
Sadly for your rhetoric, it has changed and it's you who is advancing junk-pseudo-science. It's not even pseudo-science but rather self-interested lying propaganda spread by people who want to keep on digging up and selling fossil carbon as fuel despite the problems created by ever-increasing CO2 levels in teh atmosphere.
--
Bill Sloman, Sydney
