1. MET 12 Global Warming: Lecture 10
Impacts
Shaun Tanner
San Jose State University
Outline:
Extremes of 2010/2011

2. Recent Impacts of Global Warming
That there is a link between CO2 and global temperatures is irrefutable as this diagram shows, but exact details of the link and all the possible feedback mechanisms are not clear.
The interaction of positive and negative feedback effects associated with the greenhouse effect is currently a critical issue for the scientific community.

3. Earth’s hottest year on record - 2010
2010 tied 2005 as the hottest year on record
19 nations set All-time heat records
Covered 20% of Earth’s land surface area
That there is a link between CO2 and global temperatures is irrefutable as this diagram shows, but exact details of the link and all the possible feedback mechanisms are not clear.
The interaction of positive and negative feedback effects associated with the greenhouse effect is currently a critical issue for the scientific community. 3

4. Earth’s hottest year on record - 2010
Rotation over the Arctic reversed
Produced blizzards in the Earth
snowiest Winter on record in Northeast U.S.
That there is a link between CO2 and global temperatures is irrefutable as this diagram shows, but exact details of the link and all the possible feedback mechanisms are not clear.
The interaction of positive and negative feedback effects associated with the greenhouse effect is currently a critical issue for the scientific community.

5. Sea Ice, Lowest Volume On Record - 2010
Sep. 19, 2010: 3rd lowest extent on record
2010 lowest volume on record
2011 tied for lowest extent on record
That there is a link between CO2 and global temperatures is irrefutable as this diagram shows, but exact details of the link and all the possible feedback mechanisms are not clear.
The interaction of positive and negative feedback effects associated with the greenhouse effect is currently a critical issue for the scientific community.

6. Record Melting In Greenland
Greatest ice loss by melting since 1958
Calving of 100 sq mile ice island
Record warm water along Green land West Coast
That there is a link between CO2 and global temperatures is irrefutable as this diagram shows, but exact details of the link and all the possible feedback mechanisms are not clear.
The interaction of positive and negative feedback effects associated with the greenhouse effect is currently a critical issue for the scientific community.

7. Extreme Shift in El Nino
El Nino/La Nina contributed to massive flooding
Second most extreme shift (1973)
That there is a link between CO2 and global temperatures is irrefutable as this diagram shows, but exact details of the link and all the possible feedback mechanisms are not clear.
The interaction of positive and negative feedback effects associated with the greenhouse effect is currently a critical issue for the scientific community.

8. Second Worst Coral Bleaching
Near-record Summer water in tropical oceans causes extreme bleaching
Worst since 1998, when 16% of World’s reef were killed off
That there is a link between CO2 and global temperatures is irrefutable as this diagram shows, but exact details of the link and all the possible feedback mechanisms are not clear.
The interaction of positive and negative feedback effects associated with the greenhouse effect is currently a critical issue for the scientific community.

9. Wettest Year Over Land 13% higher than second highest (1956)
Relatively dry conditions over oceans
That there is a link between CO2 and global temperatures is irrefutable as this diagram shows, but exact details of the link and all the possible feedback mechanisms are not clear.
The interaction of positive and negative feedback effects associated with the greenhouse effect is currently a critical issue for the scientific community.

10. Amazon Drought 2nd 100-year drought in 5 years
Healthy Amazon is very important for a healthy Earth
That there is a link between CO2 and global temperatures is irrefutable as this diagram shows, but exact details of the link and all the possible feedback mechanisms are not clear.
The interaction of positive and negative feedback effects associated with the greenhouse effect is currently a critical issue for the scientific community.

11. Active 2010 Hurricane Season
Sea surface hottest on record in Atlantic
3rd most active on record (2005)
Numerous records set for individual storms
That there is a link between CO2 and global temperatures is irrefutable as this diagram shows, but exact details of the link and all the possible feedback mechanisms are not clear.
The interaction of positive and negative feedback effects associated with the greenhouse effect is currently a critical issue for the scientific community.

12. Rare Tropical Storm In South Atlantic
Only seven in record history
Anita was the 4th strongest of these
That there is a link between CO2 and global temperatures is irrefutable as this diagram shows, but exact details of the link and all the possible feedback mechanisms are not clear.
The interaction of positive and negative feedback effects associated with the greenhouse effect is currently a critical issue for the scientific community.

13. Strongest Storm in Southwest History
Jan 20-21, 2010 set low pressure records in 10-15% of U.S.
Hurricane-force winds noted in Arizona
That there is a link between CO2 and global temperatures is irrefutable as this diagram shows, but exact details of the link and all the possible feedback mechanisms are not clear.
The interaction of positive and negative feedback effects associated with the greenhouse effect is currently a critical issue for the scientific community.

14. Pakistan Flood Most expensive natural disaster ever for Pakistan
Killed 1985 people and affected 20 million
That there is a link between CO2 and global temperatures is irrefutable as this diagram shows, but exact details of the link and all the possible feedback mechanisms are not clear.
The interaction of positive and negative feedback effects associated with the greenhouse effect is currently a critical issue for the scientific community.

15. Russian Heat Wave of 2010
Old record (99F) exceeded five times in two-weeks
Hit 101F on July 29, 2010
Killed 55,000 (deadliest in history) and cost $15 billion
Cut wheat output by 40%
That there is a link between CO2 and global temperatures is irrefutable as this diagram shows, but exact details of the link and all the possible feedback mechanisms are not clear.
The interaction of positive and negative feedback effects associated with the greenhouse effect is currently a critical issue for the scientific community.

16. Australian Flooding
Most expensive natural disaster in history ($30 billion)
Wettest Spring in 111 years
Queensland rainiest year on record
That there is a link between CO2 and global temperatures is irrefutable as this diagram shows, but exact details of the link and all the possible feedback mechanisms are not clear.
The interaction of positive and negative feedback effects associated with the greenhouse effect is currently a critical issue for the scientific community.

17. Colombia Flooding 2010 Killed 528 people Caused $1 billion in damage
Left 2.2 million homeless
Colombia’s deadliest flooding disaster
That there is a link between CO2 and global temperatures is irrefutable as this diagram shows, but exact details of the link and all the possible feedback mechanisms are not clear.
The interaction of positive and negative feedback effects associated with the greenhouse effect is currently a critical issue for the scientific community.