blank Global Warming
Three questions, five graphics		 Go to Next page

This sequence of web pages is a very concise top level summary in graphs to show summary evidence to the two most basic questions about global warming. These graphs are excerpted from what is now a very substantial body of scientific literature on climate research and climate modeling.

Basic question #1:    Is global warming occurring?

Exhibit 1A:  Temperature trend from AD 1000 to 1999

Millenial temperature trend
Source:  Climate Change 2001: The Scientific Basis,
© Intergovernmental Panel on Climate Change 2001
IPCC, 2001: Climate Change 2001: The Scientific Basis. Contribution of Working Group I to the Third Assessment Report of the
Intergovernmental Panel on Climate Change [Houghton, J.T.,Y. Ding, D.J. Griggs, M. Noguer, P.J. van der Linden, X. Dai, K.
Maskell, and C.A. Johnson (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, 881pp.
[This document's preface credits 60 contributors to its draft, as well as contributions from many authors and reviewers.]


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