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Hockey stick graphs present the global or hemispherical mean temperature record of the past 500 to 2000 years as shown by quantitative climate reconstructions based on climate proxy records. These reconstructions have consistently shown a slow long term cooling trend changing into relatively rapid warming in the 20th century, with the ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 31 January 2025. 2009 controversy Climatic Research Unit email controversy Date 17 November 2009 Location Climatic Research Unit, University of East Anglia Also known as "Climate gate" Inquiries House of Commons Science and Technology Committee (UK) Independent Climate Change Email Review (UK ...
The Wegman Report (officially called the Ad Hoc Committee Report on the 'Hockey Stick' Global Climate Reconstruction) was prepared in 2006 by three statisticians led by Edward Wegman at the request of Rep. Joe Barton of the United States House Committee on Energy and Commerce to validate criticisms made by Stephen McIntyre and Ross McKitrick of reconstructions of the temperature record of the ...
Most of the e-mails concerned technical and mundane aspects of climate research, such as data analysis and details of scientific conferences. The controversy has focused on a small number of e-mails, particularly those sent to or from climatologists Phil Jones, the head of the CRU, and Michael E. Mann of Pennsylvania State University (PSU), one of the originators of the graph of temperature ...
The main changes were narrowing the case to the only one of the five original grants which was not a federal grant and stating the specific allegation of fraud: he referred to the Mann, Bradley and Hughes 1998 and 1998 "hockey stick" hemispheric climate reconstructions (MBH98 and MBH99), and said "Specifically, but without limitation, some of ...
The Hockey Stick Illusion first outlines a brief history of climate change science with particular emphasis on the description of the Medieval Warm Period in the first IPCC report in 1990, with its inclusion of a schematic based on central England temperatures which Montford describes as a representation of common knowledge at that time.
The likely US departure from global climate-crisis efforts offers an opening for Bejing, a clean-tech giant. Trump called the climate crisis a scam. It could prove a gift to China.
The Hockey Stick and the Climate Wars: Dispatches from the Front Lines is a 2012 book about climate change by the American climatologist and geophysicist Michael E. Mann.In the book Mann describes how he became a researcher investigating the temperature record of the past 1000 years and was lead author, with Raymond S. Bradley and Malcolm K. Hughes, on the 1999 reconstruction that was the ...