evidence of planet earth’s fragility may 12, 2014 walter hays, global alliance for disaster...
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WEST ANTARCTICA:THWAITES ICE SHELF IS BREAKING UPTRANSCRIPT
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EVIDENCE OF PLANET EARTH’S FRAGILITY
May 12, 2014
Walter Hays, Global Alliance for Disaster Reduction, Vienna,
Virginia, USA
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LATEST EVIDENCEMay 12, 2014
ANTARCTICA’S THWAITES GLACIER ICE SHELF BEGINS TO BREAK UPIan 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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WARNINGPlanet 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