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Context of 'August 25, 2004: US Government Report: Global Warming Caused by Humans'

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In a memo to James R. Mahoney, head of the US Climate Change Science Program, Dr. Harlan L. Watson, the State Department’s chief climate negotiator, “strongly” recommends removing text referring to the conclusions of a National Academy of Sciences panel on climate and the Intergovernmental Panel on Climate Change. He argues that the text does “not include an appropriate recognition of the underlying uncertainties and the tentative nature of a number of the assertions.” Though Watson has a doctorate in solid-state physics, he has no background in climate science. [New York Times, 6/8/2005]

Entity Tags: James R. Mahoney, Harlan L. Watson

Timeline Tags: US Environmental Record, Global Warming

The US government’s Climate Change Science Program concludes in an annual report to Congress that emissions of carbon dioxide and other greenhouse gases are the only likely explanation for the rapid increase in global surface temperatures over the last three decades. It notes further that carbon dioxide and methane levels “have been increasing for about two centuries as a result of human activities and are now higher than they have been for over 400,000 years. Since 1750, CO2 concentrations in the atmosphere have increased by 30 percent and CH4 [Methane] concentrations in the atmosphere have increased by 150 percent.” The report, accompanied by a letter signed by the secretaries of energy and commerce and Bush’s science adviser, represents a dramatic shift in the administration’s view on climate change. Two years prior, when the Environmental Protection Agency similarly concluded in a report (see May 2002) that global warming is the result of human activity, Bush had dismissed it as something “put out by the bureaucracy” (see June 4, 2002). Myron Ebell, of the ExxonMobil-funded Competitive Enterprise Institute, an organization that is part of a campaign to discredit the consensus view that global warming is the result of human activity, says the report is “another indication that the administration continues to be incoherent in its global warming policies.” The report also acknowledges studies indicating that higher CO2 levels stimulate invasive weed growth more than it does crop growth. [Climate Change Science Program, 8/25/2004, pp. 79 pdf file; New York Times, 8/26/2004]

Entity Tags: Myron Ebell, Climate Change Science Program

Timeline Tags: US Environmental Record, Global Warming

James R. Mahoney, head of the US Climate Change Science Program, calls Konrad Steffen, director of the Cooperative Institute for Research in Environmental Sciences at the University of Colorado at Boulder, a joint NOAA-university institute, and asks that he and another NOAA lab director not give reporters their opinions on global warming. Reporters are likely to contact Steffen because his work was recently cited in a major international report on climate change in the Arctic. But Steffen later says he did not comply with the request. Mahoney will later tell the Washington Post that he has “no recollection” of the conversation. [Washington Post, 4/6/2006]

Entity Tags: James R. Mahoney, Konrad Steffen

Timeline Tags: US Environmental Record, Global Warming

In an interview with BBC Radio 4’s radio program, James Connaughton, head of the White House Council on Environmental Quality, insists there is lingering uncertainty with regard to climate change. “We see warming temperatures and we are still working on the issue of causation, the extent to which humans are a factor—they may be—as well as our understanding of what effects may result from that over the course of the next century,” he says. [Associated Press, 3/15/2005; Guardian, 3/15/2005]

Entity Tags: James L. Connaughton

Timeline Tags: US Environmental Record, Global Warming

Rick S. Piltz, who resigned as a senior associate in the US Climate Change Science Program on March 11, sends a memorandum to dozens of top officials explaining his resignation. In the memo, he says that the politicized editing of scientific reports and other interferences by appointees were undermining the government’s effort to determine the causes and effects of global warming. “Each administration has a policy position on climate change,” he writes. “But I have not seen a situation like the one that has developed under this administration during the past four years, in which politicization by the White House has fed back directly into the science program in such a way as to undermine the credibility and integrity of the program.” [New York Times, 6/8/2005; Maassarani, 3/27/2007, pp. 46 pdf file]

Entity Tags: Rick S. Piltz

Timeline Tags: US Environmental Record, Global Warming

In a meeting with the Royal Society, ExxonMobil executives say the company will end its funding of groups that misrepresent the science of climate change. [Royal Society, 9/4/2006 pdf file; Guardian, 9/20/2006; New York Times, 9/21/2006]

Entity Tags: ExxonMobil, Royal Society

Timeline Tags: US Environmental Record

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