MET 12 Global Warming: Lecture 10
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Transcript of MET 12 Global Warming: Lecture 10
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MET 12 Global Warming: Lecture 10
Impacts
Shaun TannerSan Jose State University
Outline:Outline: Extremes of 2010/2011
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One of the main effects of Global Warming is extreme weather events
The years of 2010 and 2011 have seen some of the most extreme weather on record
Let’s look at some examples…
Recent Impacts of Global Warming
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2010 tied 2005 as the hottest year on record
19 nations set All-time heat records
Covered 20% of Earth’s land surface area
Earth’s hottest year on record - 2010
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Rotation over the Arctic reversed
Produced blizzards in the Earth
2010-2011 snowiest Winter on record in Northeast U.S.
Earth’s hottest year on record - 2010
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Sep. 19, 2010: 3rd lowest extent on record
2010 lowest volume on record
2011 tied for lowest extent on record
Sea Ice, Lowest Volume On Record - 2010
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Greatest ice loss by melting since 1958
Calving of 100 sq mile ice island
Record warm water along Green land West Coast
Record Melting In Greenland
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El Nino/La Nina contributed to massive flooding
Second most extreme shift (1973)
Extreme Shift in El Nino
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Near-record Summer water in tropical oceans causes extreme bleaching
Worst since 1998, when 16% of World’s reef were killed off
Second Worst Coral Bleaching
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13% higher than second highest (1956)
Relatively dry conditions over oceans
Wettest Year Over Land
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2nd 100-year drought in 5 years
Healthy Amazon is very important for a healthy Earth
Amazon Drought
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Sea surface hottest on record in Atlantic
3rd most active on record (2005)
Numerous records set for individual storms
Active 2010 Hurricane Season
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Only seven in record history
Anita was the 4th strongest of these
Rare Tropical Storm In South Atlantic
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Jan 20-21, 2010 set low pressure records in 10-15% of U.S.
Hurricane-force winds noted in Arizona
Strongest Storm in Southwest History
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Most expensive natural disaster ever for Pakistan
Killed 1985 people and affected 20 million
Pakistan Flood
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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%
Russian Heat Wave of 2010
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Most expensive natural disaster in history ($30 billion)
Wettest Spring in 111 years
Queensland rainiest year on record
Australian Flooding 2010-2011
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Killed 528 people Caused $1 billion in damage Left 2.2 million homeless Colombia’s deadliest flooding disaster
Colombia Flooding 2010