Paleoclimate Reconstructions
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Slide:  Bradley
ÒNorthern Hemisphere temperatures during the past millennium: inferences, uncertainties and limitationsÓ (GRL 1999)
WARMEST 50 YEARS BEFORE 1900: 1146-1195
COLDEST 50 YEARS BEFORE 1900: 1453-1502
Error estimates : interannual non-resolved variance
1990s the warmest decade, and 1998 likely the warmest year
THE INFAMOUS HOCKEY STICK WHICH WAS BASED ON AN EXTENSIVE NETWORK OF PROXY RECORDS
NOTE THE TITLE OF THE PAPER—WE RECOGNIZED THE DIFFICULTIES OF DOING A RECONSTRUCTION AND CONSEQUENTLY THE UNCERATINTIES (9YELLOW) ARE LARGE
Source: Mann, M.E., R.S. Bradley, and M.K. Hughes, 1999. Northern Hemisphere temperatures during the past Millennium: inferences, uncertainties, and limitations. Geophys. Res. Lett., v. 26, p. 759-762.