summary for policymakers - climate change 2013 · 2013. 9. 30. · 050 200 1980 189 500 2050 -s...
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![Page 1: Summary for Policymakers - Climate Change 2013 · 2013. 9. 30. · 050 200 1980 189 500 2050 -S 2100 1000 RCP2.6 Rcp4.5 RCP6.O RCP8.5 1500 2100 Historical RCP range 1 C02 1%/yr C02](https://reader033.vdocuments.site/reader033/viewer/2022051908/5ffb83887febd4705b241d17/html5/thumbnails/1.jpg)
© Yann Arthus-Bertrand / Altitude
Summary for Policymakers Qin Dahe
Thomas Stocker
259 Authors from 39 Countries
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Key SPM Messages
19 Headlines on less than 2 Pages
2
2009: WGI Outline Approved
14 Chapters
Atlas of Regional Projections
54,677 Review Comments
by 1089 Experts
2010: 259 Authors Selected
Summary for Policymakers
~14,000 Words
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Each of the last three decades has been successively warmer
at the Earth’s surface than any preceding decade since 1850.
In the Northern Hemisphere, 1983–2012 was likely the warmest
30-year period of the last 1400 years (medium confidence).
(IP
CC
20
13
, F
ig.
SP
M.1
a)
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Warming in the climate system is unequivocal
(IP
CC
20
13
, F
ig.
SP
M.1
b)
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Human influence on the
climate system is clear
(IP
CC
20
13
, F
ig.
SP
M.6
)
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Global surface temperature change for the end
of the 21st century is likely to exceed 1.5°C
relative to 1850 for all scenarios
(IP
CC
20
13
, F
ig.
SP
M.7
a)
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Global mean sea level will continue to
rise during the 21st century
(IP
CC
20
13
, F
ig.
SP
M.9
)
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Limiting climate change will require substantial and
sustained reductions of greenhouse gas emissions
(IP
CC
20
13
, F
ig.
SP
M.1
0)
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© Yann Arthus-Bertrand / Altitude
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