PowerPoint Presentation

Paleoclimate Reconstructions

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.