Transcript Met 10

MET 12 Global Warming: Lecture 10
Impacts
Shaun Tanner
San Jose State University
Outline:
 Extremes of 2010/2011
1
Recent Impacts of Global Warming
2
Earth’s hottest year on record 2010
 2010 tied 2005 as
the hottest year on
record
 19 nations set Alltime heat records
 Covered 20% of
Earth’s land
surface area
3
Earth’s hottest year on record 2010
 Rotation over the
Arctic reversed
 Produced
blizzards in the
Earth
 2010-2011
snowiest Winter
on record in
Northeast U.S.
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
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
Extreme Shift in El Nino
 El Nino/La Nina
contributed to
massive flooding
 Second most
extreme shift
(1973)
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
Wettest Year Over Land
 13% higher than
second highest
(1956)
 Relatively dry
conditions over
oceans
Amazon Drought
 2nd 100-year
drought in 5 years
 Healthy Amazon
is very important
for a healthy Earth
Active 2010 Hurricane Season
 Sea surface hottest
on record in
Atlantic
 3rd most active on
record (2005)
 Numerous records
set for individual
storms
Rare Tropical Storm In South Atlantic
 Only seven in
record history
 Anita was the 4th
strongest of these
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
Pakistan Flood
 Most expensive
natural disaster
ever for Pakistan
 Killed 1985
people and
affected 20
million
Russian Heat Wave of 2010
 Old record (99F)
exceeded five
times in twoweeks
 Hit 101F on July
29, 2010
 Killed 55,000
(deadliest in
history) and cost
$15 billion
 Cut wheat output
by 40%
Australian Flooding 2010-2011
 Most expensive
natural disaster in
history ($30
billion)
 Wettest Spring in
111 years
 Queensland
rainiest year on
record
Colombia Flooding 2010
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Killed 528 people
Caused $1 billion in damage
Left 2.2 million homeless
Colombia’s deadliest flooding disaster