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- Melting Ice Reveals New Island off Greenland
-- Long connected to Greenland's coast by ice, this tiny island escaped
recognition for what it was for nearly a century. The island was only
identified in September 2005, by Dennis Schmitt, an explorer from
Berkeley, Calif. Melting ice enabled Schmitt to detect the island while
flying over northwestern Greenland.
- Large Area of Antarctica Melted, Re-Froze in 2005
-- The interior of Antarctica has generally appeared to be staying well
below freezing. In May 2007, however, a team of researchers found
evidence of warming and melting as much as 900 kilometers (500 miles)
- Glacial Retreat
-- Perhaps the most visible sign that Earth's climate is warming is the
gradual shrinking of its glaciers. In the past 125 years, the Athabasca
Glacier, the most visited glacier in North America, has lost half of
its volume and receded more than 1.5 kilometers.
- Recovery Ice Stream
-- A slab of ice larger than the continental United States smothers
much of East Antarctica. Draining from the East Antarctic Ice Sheet is
a river of ice nearly 800 kilometers long. This stream, the Recovery
Ice Stream, slides roughly 35 billion tons of ice into the ocean each
- Lakes Drain under Antarctic Ice Sheet
-- Throughout Antarctica, broad ribbons of ice shed large quantities of
frozen water into the ocean. Glaciologists monitor these ice streams
because they can affect sea level. The operation of Antarctica's
sub-glacial plumbing must be inferred from surface elevation changes
because the water hides thousands of feet below the surface.
- AIM Spacecraft Testing
-- This video shows some of the environmental tests that were conducted
on the spacecraft at Orbital Sciences Corporation, in Dulles, Va.
- AIM Launch and Deploy
-- This animation shows the launch and deployment of the AIM spacecraft
from Vandenberg Air Force Base in California aboard a Pegasus XL
- AIM Spacecraft in Orbit
-- This animation shows the AIM satellite orbiting the Earth, providing
the data needed to determine the role of polar mesospheric clouds as an
important indicator of our planet's changing climate.
- Noctilucent Cloud Sightings
-- This animation shows polar mesospheric clouds that form during each
polar regionā??s summer months in the coldest place in the atmosphere.
- What is a Noctilucent Cloud?
-- This animation shows noctilucent clouds that typically form in the
cold, summer polar mesosphere region and are made of water ice
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