IPCC Fourth Assessment Report

“Climate Change 2007: The Physical Science Basis”, assesses the current scientific knowledge of the natural and human drivers of climate change, observed changes in climate, the ability of science to attribute changes to different causes, and projections for future climate change.

The report was produced by some 600 authors from 40 countries. Over 620 expert reviewers and a large number of government reviewers also participated. Representatives from 113 governments reviewed and revised the Summary line-by-line during the course of this week before adopting it and accepting the underlying report.

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IPCC Fourth Assessment Report, Working Group III Report "Mitigation of Climate Change"
Full report now available online (pre-copy edit version)
31.05.07, © IPCC

IPCC Fourth Assessment Report, Working Group III, "Mitigation of Climate Change"
Summary for Policymaker
The Working Group III contribution to the IPCC Fourth Assessment Report (AR4) focuses on new literature on the scientific, technological, environmental, economic and social aspects of mitigation of climate change, published since the IPCC Third Assessment Report (TAR) and the Special Reports on CO2 Capture and Storage (SRCCS) and on Safeguarding the Ozone Layer and the Global Climate System (SROC).
04.05.07, © IPCC

IPCC Fourth Assessment Report, Working Group II Report "Impacts, Adaptation and Vulnerability"
Summary for Policymakers
This Summary sets out the key policy-relevant findings of the Fourth Assessment of Working Group
II of the Intergovernmental Panel on Climate Change (IPCC).
The Assessment is of current scientific understanding of impacts of climate change on natural, managed and human systems, the capacity of these systems to adapt and their vulnerability1. It builds upon past IPCC assessments and incorporates new knowledge gained since the Third Assessment.


IPCC Fourth Assessment Report,Working Group I Report "The Physical Science Basis",
Full report

IPCC Report: Climate Change 2007, Working Group I Report: "The Physical Science Basis"
Summary for Policymakers

Highlights from "Climate Change 2007: The Physical Science Basis - Summary for Policy Makers"
Pew Center's Summary of the Report
© Pew Center

Summary of the 10th Session of Working Group I of the Intergovernmental Panel on Climate Change: 29 January - 1 February 2007
© Earth Negotiations Bulletin, IISD

Fotostrecke: Karten der Klimazukunft
© Der Spiegel

Grafik: Starke Erwärmung zu erwarten
Durchschnittstemperatur weltweit - Abweichung vom Mittel der Jahre 1980 - 1999 in Grad Celsius - Prognose
© Der Standard


International Press:

Bush accepts science on warming
The White House yesterday embraced a new international report faulting humans for global warming, marking the furthest President Bush has gone in placing blame.
But administration officials again rejected the Kyoto-style caps on carbon emissions that have been the preferred solution of European nations.
The report, released in Paris by the U.N. Intergovernmental Panel on Climate Change, said the fact that the Earth is now warming "is unequivocal," and said it is "very likely" that human activity is responsible for many of the changes.
03.02.07, © The Washington Times

2500 scientists, 1200 pages, and one quibble
After years of research and a marathon week of intense secret debate, scientists from around the world last night signed off on a bleak assessment of a devastated planet: Earth. A turbulent future of violent storms, devastating drought, increasing temperatures and rising sea levels is inevitable, according to a United Nations report released in Paris last night. The report, the work of 2500 scientists over six years, is considered the most authoritative evaluation of climate change ever produced.
03.02.07, © the Age.com.au

Fossil fuel and land use behind CO2 rise
The first volume of the fourth assessment report by the Intergovernmental Panel on Climate Change (IPCC) has been almost three years in the writing and brings together the work of 600 writers from 40 countries. More than 620 experts have reviewed the findings, and representatives of 113 governments have read and revised the key points.
The report assesses our current knowledge of climate change and the reasons behind it, looks at how the climate has already changed and how a range of different scenarios may have an impact in the future.
02.02.07, © The Guardian Unlimited

UNO-Klimabericht: Temperaturanstieg "beispiellos"
Bis zum Ende des Jahrhunderts droht der Erde eine "beispiellose" Klimaerwärmung um bis zu 6,4 Grad Celsius. Davor warnt der UNO-Klimarat IPCC in seinem vierten, am Freitag in Paris vorgestellten Bericht.
02.02.07, © ORF Science

US-Regierung lehnt nach UNO-Klimabericht einseitige Maßnahmen ab
Die US-Regierung hat sich in einer Reaktion auf den neuen UNO-Bericht über die Erderwärmung gegen einseitige Maßnahmen zur Bekämpfung des Klimawandels ausgesprochen. Der US-Anteil am Ausstoß von Treibhausgasen sei nur "gering, wenn man sich den Rest der Welt ansieht", sagte US-Energieminister Sam Bodman am Freitag.
03.02.07, © Der Standard




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