Hockey stick graphs present global or hemispherical mean global surface temperatures of the distant past, as shown by quantitative climate reconstructions based on climate proxy records, in relation t
IPCC WG1 Co-chair Sir John T. Houghton showing the IPCC fig. 2.20 hockey stick graph at a climate conference in 2005
The original Northern Hemisphere hockey stick graph of Mann, Bradley & Hughes 1999, smoothed curve shown in blue with its uncertainty range in light blue, overlaid with green dots showing the 30-year global average of the PAGES 2k Consortium 2013 reconstruction. The red curve shows measured global mean temperature, according to HadCRUT4 data from 1850 to 2013.
Michael E. Mann
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Michael Evan Mann is an American climatologist and geophysicist. He is a professor at the University of Pennsylvania, having stepped down from his administrative role as the director of the Center for
Hockey stick graph (global temperature)
…as of 2009, was still being used by most large-scale reconstructions. Their study was featured in the IPCC Second Assessment Report of 1995. In 1998 Michael E. Mann, Raymond S. Bradley and Malcolm K. Hughes developed new statistical techniques to produce Mann, Bradley & Hughes 1998 (MBH98), the first eigenvector-based…
Mann in 2019
The Madhouse Effect How Climate Change Denial Is Threatening Our Planet Destroying Our Politics and Driving Us Crazy CSICon 2016
CSICon 2016