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Apr 23, 2018 · IPCC and Michael Mann/Penn State. Today is the 20th anniversary of one of the most iconic images in science. On 23 April 1998, US climate scientist Michael Mann and two colleagues...
Feb 9, 2010 · And in the man who first drew the hockey stick, a young paleoclimatologist called Professor Michael Mann of Penn State University, they have found an angry, outspoken and sometimes...
It was a simple graph, derived from large-scale networks of diverse climate proxy (“multiproxy ”) data such as tree rings, ice cores, corals, and lake sediments, that captured the unprecedented nature of the warming taking place today.
Nov 3, 2016 · Until late last year, Penn State climate scientist Michael Mann was most widely known for helping create the so-called “hockey stick” temperature graph, which showed the sharp (compared to the slow cooling of the previous nine centuries) 1.5 degrees F rise in Earth’s temperatures over the past 100 years.
May 16, 2007 · The hockey graph was first published in a 1999 paper (pdf) by Michael Mann and colleagues, which was an extension of a 1998 study in Nature. The graph was highlighted in the 2001 report...
- Michael Le Page
- Environment Reporter
Mar 1, 2005 · Seven years ago Michael Mann introduced a graph that became an iconic symbol of humanity's contribution to global warming. He has been defending his science ever since. By David Appell. March...
More than two dozen reconstructions, using various statistical methods and combinations of proxy records, support the broad consensus shown in the original hockey stick graph, with variations in how flat the pre-20th century "shaft" appears.
