Historical video perspective: our current “unprecedented” global warming in the context of scale
http://wattsupwiththat.com/2009/12/1...text-of-scale/
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The graph from that post, shown above, illustrates the last 3000 5000 years, with the 20th century instrumental record splice added (like Mann did in his original hockey stick paper) to show the warming of the last century. Clearly, the medieval warm period around the year 1000 is still warmer than the present
http://wattsupwiththat.com/2009/12/1...text-of-scale/
The graph from that post, shown above, illustrates the last 3000 5000 years, with the 20th century instrumental record splice added (like Mann did in his original hockey stick paper) to show the warming of the last century. Clearly, the medieval warm period around the year 1000 is still warmer than the present
For those who don’t know the story, geoscientist Michael Mann wrote an article showing a graph shaped like a hockey stick to prove 1998 was the hottest year is the last 1,000. The United Nation’s Intergovernmental Panel on Climate Change relied heavily on Mann’s hockey stick in its 2001 report arguing greenhouse gases including CO2 were the culprit of global warming.
By 2003, two Canadians named Stephen McIntyre and Ross McKitrick assiduously started researching Mann’s facts and computer hypotheticals.
By ignoring the medieval warm period when temperatures exceeded what we have today at a time when today’s industrialization did not exist, and finding Mann skewed computer codes and used improper data, McIntyre and McKitrick proved Mann’s argument for CO2-caused global warming was “a carefully worked artificial creation.”
McIntyre and McKitrick’s work led to a U.S. Senate investigation that debunked Mann’s hockey stick theory that 1998 was the hottest year in the last 1,000. The Senate investigation also found the study of the social networking of the paleoclimatology world showed how close it was and how often a small group of scientists both co-wrote and peer reviewed papers for each other. In addition, no statisticians were ever involved in their research work or peer review articles.
Public doubt about MMGW increased in 2009 and 2011 when hacked emails of scientists at the Climate Research Unit of East Anglia University disclosed their scientists concealed and/or destroyed raw data and computer codes, manipulated facts, did research work without collaborating with professional statisticians, and were highly politically motivated working for the IPCC.
-
Norm Sauer
http://wattsupwiththat.com/2015/09/2...ast-750-years/
By 2003, two Canadians named Stephen McIntyre and Ross McKitrick assiduously started researching Mann’s facts and computer hypotheticals.
By ignoring the medieval warm period when temperatures exceeded what we have today at a time when today’s industrialization did not exist, and finding Mann skewed computer codes and used improper data, McIntyre and McKitrick proved Mann’s argument for CO2-caused global warming was “a carefully worked artificial creation.”
McIntyre and McKitrick’s work led to a U.S. Senate investigation that debunked Mann’s hockey stick theory that 1998 was the hottest year in the last 1,000. The Senate investigation also found the study of the social networking of the paleoclimatology world showed how close it was and how often a small group of scientists both co-wrote and peer reviewed papers for each other. In addition, no statisticians were ever involved in their research work or peer review articles.
Public doubt about MMGW increased in 2009 and 2011 when hacked emails of scientists at the Climate Research Unit of East Anglia University disclosed their scientists concealed and/or destroyed raw data and computer codes, manipulated facts, did research work without collaborating with professional statisticians, and were highly politically motivated working for the IPCC.
-
Norm Sauer
http://wattsupwiththat.com/2015/09/2...ast-750-years/