Hallo, eco-conscious viewers, and welcome to another edition of Planet
Earth: Our Loving Home. Antarctica’s land mass extends for more than
14-million square kilometers, ninety-eight percent of which is covered
by the Antarctic ice sheet.
The continent accounts for 90 percent of the world’s ice and 72 percent of its freshwater reserves.
However,
climate change is rapidly thawing this ice, and if the entire sheet
were to melt, Earth’s sea level would rise 60 to 70 meters, an
unimaginable outcome for all beings on the planet.
Recently the
world’s attention has been drawn to the rapidly collapsing Wilkins Ice
Shelf, a 4,000-square-kilometer mass of floating ice in the western
part of the Antarctic Peninsula.
A thin, 40-kilometer ice
bridge, the last piece keeping the Shelf in place, shattered in April
2009, an event that is expected to cause the Shelf to disintegrate at
an even faster rate.
To learn more about the effects of global
warming on Antarctica, we spoke with Dr. Ted Scambos, lead scientist at
the University of Colorado’s National Snow and Ice Data Center in the
US.
Dr. Scambos’s research covers glaciology, remote sensing,
geochemistry and planetary science. His current studies involve
Antarctica’s ice sheet, ice shelves and sea ice.
He has
briefed former US Vice President and Nobel Peace Prize laureate Al Gore
on ice sheets and contributed to the United Nations Intergovernmental
Panel on Climate Change report 『Climate Change 2007: The Physical
Science Basis.』 Dr. Scambos first discusses the collapse of the Wilkins
Ice Shelf.
nsidc.org/research/bios/scambos.html