The future of
climate science A public forum with world-leading IPCC
climate researchers
#climate2014 www.exeter.ac.uk/climate2014
#climate2014 www.exeter.ac.uk/climate2014
Professor Thomas Stocker
Co-Chair of Working Group I
#climate2014 www.exeter.ac.uk/climate2014
1
Observations
Understanding
Future
www.climatechange2013.org
Warming of the climate system
is unequivocal
IPC
C 2
013, F
ig. S
PM
.1b
Temperature Difference 1901 to 2012 based on trend (°C)
Warming of the climate system
is unequivocal
Change in E
nerg
y C
onte
nt
(10
21 J
oule
)
1980 1990 2000 2010
300
200
0
100
-100 1970
atmosphere, land, ocean
extreme events
water cycle
global mean sea level
Human influence on the
climate system is clear.
sea ice, glaciers, ice sheets
Cause
Worldwide Effects
IPC
C 2
013, F
ig. S
PM
.8
2°C world
IPC
C 2
013, F
ig. S
PM
.8
4.5°C world 2°C world
IPC
C 2
013, T
FE
.2, F
ig. 2
+19 cm
+98 cm
IPC
C 2
013, F
ig. S
PM
.8
Today we have a choice.
4.5°C world 2°C world
www.climatechange2013.org