IPCC Fourth Assessment Report
Climate Change 2007, the Fourth Assessment Report (AR4) of the United Nations Intergovernmental Panel on Climate Change (IPCC), is the fourth in a series of reports intended to assess scientific, technical and socio-economic information concerning climate change, its potential effects, and options for adaptation and mitigation. The report is the largest and most detailed summary of the climate change situation ever undertaken, produced by thousands of authors, editors, and reviewers from dozens of countries, citing over 6,000 peer-reviewed scientific studies.
It supersedes the Third Assessment Report (2001), and will in turn be superseded by the Fifth Assessment Report (expected in 2014).
The headline findings of the report were: "warming of the climate system is unequivocal", and "most of the observed increase in global average temperatures since the mid-20th century is very likely due to the observed increase in anthropogenic greenhouse gas concentrations."
Read more about IPCC Fourth Assessment Report: Sections, Working Group I: The Physical Science Basis, Working Group II: Impacts, Adaptation and Vulnerability, Working Group III: Mitigation of Climate Change, Synthesis Report, Criticism
Famous quotes containing the words fourth, assessment and/or report:
“And he was lost among the waves,
His ship rolled helpless in the sea,
The fourth month of his voyage
He shouted grievously
“Beloved, do not think of me.””
—Alun Lewis (1915–1944)
“The first year was critical to my assessment of myself as a person. It forced me to realize that, like being married, having children is not an end in itself. You don’t at last arrive at being a parent and suddenly feel satisfied and joyful. It is a constantly reopening adventure.”
—Anonymous Mother. From the Boston Women’s Health Book Collection. Quoted in The Joys of Having a Child, by Bill and Gloria Adler (1993)
“We have been here over forty years, a longer period than the children of Israel wandered through the wilderness, coming to this Capitol pleading for this recognition of the principle that the Government derives its just powers from the consent of the governed. Mr. Chairman, we ask that you report our resolution favorably if you can but unfavorably if you must; that you report one way or the other, so that the Senate may have the chance to consider it.”
—Anna Howard Shaw (1847–1919)