Bradley's work indicates that the warming of Earth's climate system in the twentieth century is inexplicable via natural mechanisms.
Ray Bradley is a Distinguished Professor in the Department of Geosciences and Director of the Climate System Research Center at the University of Massachusetts, Amherst.
This led to him becoming the target of political attacks by global warming deniers, to which he has responded, in terms that provide a clear explanation of the issues involved for the public at large, in "Global Warming and Political Intimidation", 2011, University of Massachusetts Press, Amherst, also available in a Japanese translation [2012] by Kagaku Dojin, Tokyo.
Law, 2001, Stanley Thornes, Cheltenham, U.K.); "Climate Variations and Forcing Mechanisms of the Last 2000 years" (eds.
In addition, Bradley has authored/co-authored more than 200 peer-reviewed articles on climate change, covering a wide range of topics.
Bradley was a contributing author to the IPCC TAR [1], and worked on reconstructing the temperature record of the past 1000 years with Michael E. Mann and Malcolm K. Hughes, a dendroclimatologist.
[1] In 2005, the Chair of the US House of Representatives Committee on Energy and Commerce, Rep. Joe Barton (R-Texas) demanded that Bradley provide a detailed accounting of the data and funding of his research on climate change.
He has given talks at venues in China, Japan, Dubai, England, Switzerland, France, Germany, Spain, Sweden, Norway, Finland, Canada, Chile, Argentina and the United States.
Bradley's research interests are in climatology and paleoclimatology, with a particular focus on how climate has changed since the last ice age.