Geology Reference
In-Depth Information
P
FIGURE 18.9
Past and projected global temperatures and atmospheric C0
2
. Note scale change (National Science and Technology
Council, 1997).
b.
Your instructor may assign specific topics in the TAR for
you or your group to research before next class. Topics
might include expected temperature increase over 1,100
years (beginning in the year 1000), sea level rise and its
causes, scenarios for GHG emissions, options for reducing
emissions, and how long temperature will continue to
increase after GHG are stabilized? Also, What are the socioe-
conomic scenarios? What are the 20th century changes in the
Earth system? What are the impacts of extreme climate
changes?
c.
Additionally, answer the question, What action should
the world take now (or in the future) to address these pro-
jected climate changes?
The TAR Summary for Policy Makers is online with
other IPCC Reports at:
http://www.ipcc.ch/
12.
The IPCC Fourth Assessment Report (AR4) further
refines the certainty of human activity as a major factor in
global warming and the possible range in temperature to be
expected in 2100. Consult IPCC(2007) online and prepare a
paragraph on one of the following:
a.
expected temperature in 2100
You may be asked to prepare an oral report (with written
notes) on your topic.
b.
C0
2
content of the atmoshphere in 2100
