Skip to comments.Two decades of the 'hockey stick' graph; Where are we today?
Posted on 01/24/2019 8:57:30 AM PST by SeekAndFind
The "hockey stick" graph refers to the results of Dr. Michael Mann (see "NIPCC vs. IPCC," Fig. 20, pg. 22). In 1998, he presented a summary of his analysis of "proxy" data of the past 1,000 years, mostly tree-ring temperatures. He showed a steady decline of temperature of the Northern hemisphere, without the "cooling" of the Little Ice Age (LIA), followed by a sharp temperature rise (the "blade" of the hockey-stick) in the 20th century. The implication of his graph is obvious, but it is wrong in claiming that the copious emission of CO2 in the 20th century produced record warming in the decades before 1942. Of course, the emission of CO2 grew after 1945, at the end of WWII, but the climate seemed to cool until about 1975. (Apparently, the climate did not respond to CO2, as expected from greenhouse theory.)
However, Mann halted the use of his proxy data at the end of the 1970s decade and cleverly added the instrumental data for the period 1978-1998 from surface thermometers, which showed a sharp rise seen by surface thermometers that proved to be a complete illusion (some went so far as to use the word "fake"). He managed to suppress his own contemporaneous proxy data for that interval and has never revealed them. To do so would have removed the sharp rise ("the blade") and ruined his "hockey stick" graph.
In other words, the "hockey stick" is a fictitious construct that has been called "Mike's nature trick" by some and has been "whitewashed" by the usual panels that were unaware of the background and implications.
The IPCC-Assessment Report-3 (2001) featured the "hockey stick" as the consequence as proof of human activity in the 20th century. Mann has since received many honors and lucrative government grants.
(Excerpt) Read more at americanthinker.com ...
The Mann and Steyn are still fighting it out in a DC Federal Court?
Two decades of the ‘hockey stick’ graph; Where are we today?
Knee deep in hockey.......................
I went to a Global Warming summit and a fight broke out! There were hockey sticks flying everywhere!
Mark Steyn put his neck on the line to confront this BS and won, and wrote a book about it:
2.5 to 5.5 feet of ocean rise in cali by 2100, Or 12 years if you listen to ‘aoc’. Pfffftttttt!
I’ll check that book out, thanks.
One of my favorite books that debunks man-caused global warming is “Red Hot Lies” by Christopher Horner.
Lol You’re right. But maybe waist deep.
Hide the Decline: https://youtube.com/watch?v=WMqc7PCJ-nc
I still say the “hockey blade” is a processing artifact from a sloppy use of curve fitting algorithms. I have seen similar where you see that kind of thing at one or both endpoints of the data being modeled.
Only “Hockey Pucks” (RIP Don), believe in Man-Made Global Warming.
So why do they keep showing the fake news hokey stick and why don’t they update the graph to real data?
The Politically Incorrect Guide to Climate Change by Marc Morano is an excellent book in showing how the Hockey Stick and other Lysienkism’s of the climate change cult are false and have been wrong. It does a good job of outlining how every “theory” of the AGW climate cult has been wrong.
I’d still like to see a good old fashioned winter like we used to have here in PA.
It’s been a while since I’ve seen snow from late November all the way until April.
Referred to modeling noise.
Anyone with a minimal background in statistics and research would look at this stuff and dismiss it out of hand. The methodology is beyond embarrassing, it’s out and out fraud.
If I had submitted something like this to any of my research classes in college in the early 70s I would have been chewed out and failed.
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.