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|a Summary for Policymakers-Working Group I Contribution to the IPCC Fifth Assessment Report |h [electronic resource] |b Climate Change 2013: The Physical Science Basis. |
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|a Please contact the owning institution for licensing and permissions. It is the user's responsibility to ensure use does not violate any third party rights. |
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|a The Working Group I contribution to the IPCC's Fifth Assessment Report (AR5) considers new
evidence of climate change based on many independent scientific analyses from observations of
the climate system, paleoclimate archives, theoretical studies of climate processes and simulations
using climate models. It builds upon the Working Group I contribution to the IPCC’s Fourth
Assessment Report (AR4), and incorporates subsequent new findings of research. As a
component of the fifth assessment cycle, the IPCC Special Report on Managing the Risks of
Extreme Events to Advance Climate Change Adaptation (SREX) is an important basis for
information on changing weather and climate extremes.
This Summary for Policymakers (SPM) follows the structure of the Working Group I report. The
narrative is supported by a series of overarching highlighted conclusions which, taken together,
provide a concise summary. Main sections are introduced with a brief paragraph in italics which
outlines the methodological basis of the assessment.
The degree of certainty in key findings in this assessment is based on the author teams’
evaluations of underlying scientific understanding and is expressed as a qualitative level of
confidence (from very low to very high) and, when possible, probabilistically with a quantified
likelihood (from exceptionally unlikely to virtually certain). Confidence in the validity of a finding is
based on the type, amount, quality, and consistency of evidence (e.g., data, mechanistic
understanding, theory, models, expert judgment) and the degree of agreement1. Probabilistic
estimates of quantified measures of uncertainty in a finding are based on statistical analysis of
observations or model results, or both, and expert judgment2. Where appropriate, findings are also
formulated as statements of fact without using uncertainty qualifiers. (See Chapter 1 and Box TS.1
for more details about the specific language the IPCC uses to communicate uncertainty)
The basis for substantive paragraphs in this Summary for Policymakers can be found in the
chapter sections of the underlying report and in the Technical Summary. These references are
given in curly brackets. |
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|a Electronic reproduction. |c Florida International University, |d 2015. |f (dpSobek) |n Mode of access: World Wide Web. |n System requirements: Internet connectivity; Web browser software. |
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|a International Panel on Climate Change Working Group I. |
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|a dpSobek |c Sea Level Rise |
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|u http://dpanther.fiu.edu/dpService/dpPurlService/purl/FI15052568/00001 |y Click here for full text |
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|a http://dpanther.fiu.edu/sobek/content/FI/15/05/25/68/00001/FI15052568_thm.jpg |
