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EVIDENCE OF PLANET EARTH’S FRAGILITY
27 May 2014
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LATEST EVIDENCE
May 27, 2014
ANTARCTICA’S THWAITES GLACIER
ICE SHELF BEGINS TO BREAK UP
Ian Joughin, a glaciologist at the
University of Washington in Seattle
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WEST ANTARCTICA:THWAITES
ICE SHELF IS BREAKING UP
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THWAITES GLACIER
• Thwaites Glacier is losing
several meters (tens of feet) of
ice elevation every year.
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WARNING
Planet Earth may be at greater
risk than ever before if global
climate change proves to be a
long-term threat
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Source: SCIENCE, May 2014
• Two teams of scientists say the
long-feared collapse of the West
Antarctic Ice Sheet has begun,
kicking off what they say will be a
centuries-long, "unstoppable"
process that could raise sea levels
by as much as 4 m (15 ft).
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Source: SCIENCE, May 2014
• They estimate that Thwaites
Glacier will probably disappear
entirely in somewhere between 200
and 1,000 years.
• That loss alone would raise global
sea level by nearly 2 feet (60
centimeters).
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Source: SCIENCE, May 2014
• The glacier serves as a linchpin
for the rest of the West
Antarctic Ice sheet, which has
enough frozen mass to cause
another 10 to 13 feet (3 to 4
meters) of sea level rise.
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IF PLANET EARTH
CONTINUES WARMING UP,
- - -
MANY LOCATIONS WILL HAVE ENVIRONMENTS AT HIGHER RISK AS TEMPERATURE INCREASES AND SEA
LEVEL RISES, AS HYPOTHESIZED
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CITIES (PEOPLE, PROPERTY, AND INFRA-
STRUCTURE) MAY BE AT HIGHER RISK
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IMPACT: NORTHEAST USA: 1
METER RISE IN SEA LEVEL
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IMPACT:FLORIDA: 1 METER
RISE IN SEA LEVEL
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IMPACT: LOUISIANA: 1 METER
RISE IN SEA LEVEL
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MONITORING, MITIGATION,
AND ADAPTATION
MEASURES:
WAYS TO COPE WITH
GLOBAL CLIMATE CHANGE
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CURRENT NEEDS
Planet Earth’s
changes in
exposure and risk
over time have
created a need for:
Technology to
monitor global
climate change,
warn people, and
protect property,
and infrastructure.
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EVIDENCE OF GLOBAL
WARMING CITED IN THE
PAST
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KANAI FJORD, ALASKA
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NORTHWEST TERRITORIES,
CANADA
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GREENLAND
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WENGEN, SWITZERLAND
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MT KILIMANJARO, TANZANIA
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GREAT BARRIER REEF,
AUSTRALIA
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ANTARCTICA: WILKINS ICE
SHELF DISINTEGRATION
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SOUTH GEORGIA ISLAND
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DALIAN, CHINA
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Natural Phenomena that Change
our Environment
Planet Earth is
warming up, as
shown by:
Advance of
deserts
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1/6 OF WORLD’S POPULATIONS
AFFECTED BY DESERTIFICATION
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Natural Phenomena that Change
our Environment
Planet Earth is
warming up,
causing:
Droughts
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DROUGHT IN CHINA: 2007
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Natural Phenomena that Change
our Environment
Planet Earth is
warming up,
which causes:
Rivers to dry
up.
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COLORADO RIVER BASIN,
WESTERN USA
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LOS ANGELES RIVER: SUMMER
2007
.
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ELBE RIVER, GERMANY:
SUMMER, 2007