May 11, 2007
SPACE STATION PROVIDES NEW
'WINDOW' FOR INTERNATIONAL POLAR YEAR
It's
happened only three other times in history. But this time, the
International
Polar Year will have unprecedented access to an out-of-this-world
platform --
210 miles up in space.
The
International Polar Year is a collaborative effort to study the Arctic and the Antarctic from
March 2007 to March 2009.
Crew members on the International Space Station are supporting the
scientific
program by taking new snapshots of Earth's polar regions -- the areas
of the
globe surrounding the North and South poles -- from the unique vantage
point of
space.
It's
been
50 years since the last event like this, with previous polar years
observed in
1882 and 1932. This year will have the largest number of participants,
with
thousands of scientists from more than 60 countries examining the polar
regions
in a wide range of topics, including surface and atmospheric
temperatures,
changes in snow and ice and the shrinkage of glaciers. They also hope
to dip
into unexplored areas.
Because the International Space Station provides a unique venue for
observing
polar phenomena, NASA has invited scientists participating in the polar
program
to submit requests for relevant imagery to be photographed from space.
As
part
of the Crew Earth Observations experiment, space station astronauts
photograph
designated sites and dynamic events on the Earth’s surface
using digital
cameras equipped with a variety of lenses. Depending on the station's
position
and weather in the target regions, astronauts can collect
high-resolution
digital photos of a specific location or lower-resolution photos that
cover
very large areas.
During the timeframe of the International Polar Year, polar
observations are a
scientific focus for the Crew Earth Observations experiment; the
experiment is
designated CEO-IPY.
Previous space station crew members have photographed such phenomena as
auroras, polar mesospheric clouds and patterns and calving of sea ice.
Although
the station does not cross the poles, astronauts can look toward the
poles to
document these phenomena.
"Polar regions are
rich in phenomena
obtuse to our daily temperate-region lives and naturally draw one's
scientific
attention, whether on or off of Earth," said NASA astronaut Don Pettit,
the leader of the effort to link polar scientists with the space
station.
"I want IPY scientists on Earth to have access to the space station
perspective, where observations can be made on the length scale of half
a
continent and will complement observations made on Earth or by higher
orbiting
satellites."
The Crew
Earth Observations imagery Web site for CEO-IPY, http://eol.jsc.nasa.gov/ipy/
provides an online form that allows polar region investigators to
interact with
Earth observation scientists and define and submit their imagery
requests.
"This information is integrated into daily communications with the
station
astronauts about their photo targets, so that crew members know what
kind of
photos would help the scientists, and when those areas will be visible
through
the windows of the station," said Cindy Evans, a NASA scientist who has
been developing the online scientific resources.
All photos collected are posted on the Web for downloading and then
adapted
into polar year projects. Examples of imagery and detailed information
about
scientific observations from the space station also can be downloaded
from the CEO-IPY
Web
site.
For
more information and images,
visit:
http://www.nasa.gov/vision/earth/environment/polar_year.html
NASA's
IPY Website:
http://www.nasa.gov/mission_pages/IPY/main/index.html
##
Contact:
Steve Roy
NASA Marshall
Space Flight Center
256-544-6535
This text is
derived from:
http://www.nasa.gov/vision/earth/environment/polar_year.html
Recommend this Article to a Friend
Back to: News |