“Warming of the climate system is unequivocal, human influence on the climate system is clear, and limiting climate change will require substantial and sustained reductions of greenhouse gas emissions,” are the “key conclusions” according to the latest assessment by the Intergovernmental Panel on Climate Change (IPCC) released today in its full and
The IPCC then gave details as to how the report was constructed, and the approvals from the scientific community that accompany the report.
The IPCC said its Summary for Policymakers of its “Working Group I assessment report Climate Change 2013: the Physical Science Basis, was approved in September 2013 by the member governments of the IPCC meeting in Stockholm, Sweden, who also accepted the underlying report, after which the Summary for Policymakers was immediately made public. The full report released today is the basis for the key conclusions presented in the summary for Policymakers.”
Thomas Stocker, Co-Chair of IPCC Working Group I, commented: “The Working Group I Fifth Assessment Report, which has over 1500 printed pages of text and includes more than 600 printed diagrams, provides a comprehensive assessment of the physical science basis of climate change, citing more than 9000 scientific publications. The report provides information about what has changed in the climate system, why it has changed, and how it will change in the future.”
The explained that the “full report consists of the Summary for Policymakers, a longer Technical Summary, 14 chapters and six annexes including an Atlas of Global and Regional Climate Projections. The Atlas is an innovation in this Working Group I assessment, containing time series and maps of temperature and precipitation projections for 35 regions of the world, which enhance accessibility for stakeholders and users.
“As well as the printed Atlas, there are four sets of Atlas Supplementary Material with 155 figures each, and the data underlying the Atlas figures will also be made available as part of the launch.
“Another innovative feature of this report is the presentation of Thematic Focus Elements in the Technical Summary that provide end-to-end assessments of important cross-cutting issues for understanding the physical science basis of climate change, such as water cycle change, irreversibility and abrupt change, climate sensitivity and feedbacks, climate targets and stabilization. All chapters contain Frequently Asked Questions in which the authors provide scientific answers to a range of general questions in an accessible form.”
Qin Dahe, the other Co-Chair of WGI, from Beijing, China, said: “I would like to thank the hundreds of scientists and experts around the world who served as authors and review editors for producing a comprehensive and scientifically robust assessment. I also express my thanks to the more than one thousand expert reviewers for contributing their expertise in the preparation of this assessment.
Source: the Intergovernmental Panel on Climate Change (IPCC)