+ Visit NASA.gov + Advanced Search   + About the Server   + Animation List   + How to Use the Server   + RSS Feeds   + Podcasts   + Opportunities Previous Animation Next Animation Annual Sea Ice Cycle over Northern Canada Over the course of a year, sea ice in northern Canada pulsates down into the Hudson Bay and retreats northward in the summer months. In the winter months where the sea ice extends down into the bay, polar bears wander onto the ice in search of food. As summer approaches and the sea ice melts, the bears wander back onto the mainland until the next winter. Data for this animation was gathered from the Aqua satellite's Advanced Microwave Scanning Radiometer for the Earth Observing System (AMSR-E). Aqua is a NASA satellite and the AMSR-E instrument onboard was provided by the Japan Aerospace Exploration Agency (JAXA). For more information on this story, please visit http://www.nasa.gov/centers/goddard/news/topstory/2006/polar_bears.html    This animation depicts the seasonal sea ice change in northern Canada by cycling twice through August 5, 2005 to August 5, 2006. Duration: 26.0 seconds Available formats:   1920x1080 (30 fps) MPEG-4   20 MB   1280x720 (30 fps) MPEG-4   20 MB   640x480 (29.97 fps) MPEG-4   17 MB   720x480 (29.97 fps) MPEG-2   19 MB   640x480 (29.97 fps) MPEG-1   10 MB   320x240 (30 fps) MPEG-1   4 MB   1920x1080 (30 fps) Frames   720x480 (29.97 fps) Frames   320x213     PNG           98 KB   160x80       PNG           23 KB   80x40         PNG           6 KB   320x240 (30 fps) X-FLV       917 KB How to play our movies    Hudson Bay sea ice on November 14, 2005. Available formats:   2560 x 1920     TIFF 6 MB   320 x 240         PNG     124 KB    Hudson Bay sea ice on April 29, 2006. Available formats:   2560 x 1920     TIFF 5 MB   320 x 240         PNG     122 KB Animation Number: 3368 Completed: 2006-08-31 Animators: Alex Kekesi (GST) (Lead)   Cindy Starr (GST) Scientist: Claire Parkinson (NASA/GSFC) Platforms/Sensors/Data Sets: Aqua/AMSR-E   Aqua/AMSR-E/Daily L3 6.25 km 89 GHz Brightness Temperature (Tb)   Aqua/AMSR-E/Level 3 12.5 km Sea Ice Concentration Data Collected: 8/5/2005 - 8/5/2006 Keywords: DLESE >> Cryology SVS >> HDTV DLESE >> Physical oceanography GCMD >> EARTH SCIENCE >> Cryosphere >> Sea Ice GCMD >> EARTH SCIENCE >> Oceans >> Sea Ice GCMD >> EARTH SCIENCE >> Cryosphere >> Sea Ice >> Sea Ice Motion GCMD >> EARTH SCIENCE >> Oceans >> Sea Ice >> Sea Ice Motion More Information on this topic available at: http://www.nasa.gov/centers/goddard/news/topstory/2006/polar_bears.html This work has been visible on the CBS Evening News with Katie Couric, National Geographic News, Outside Magazine, Indymedia, The Rocky Mountain News in Denver, Gannett, Denver Post, Voice of America, Greenwire, Washington Post, National Post, Reuters, USA Today, NHK Japan Broadcasting, ABC News, Chemical and Engineering News, Associated Press, Scripps Howard, San Francisco Chronicle, EOS, Los Angeles Times, Chicago Tribune, Northern Native Broadcasting Ukon, Daily Camera, New York Times, USA Today, Discovery Channel News, National Snow and Ice Data Center, Canadian Braodcasting Corporation , New Scientist, Alaska Public Radio Network, Vic Pelletier Production, Terra Nature, and BNA     Please give credit for this item to NASA/Goddard Space Flight Center Scientific Visualization Studio Back to Top + Privacy Policy and Important Notices + Reproduction Guidelines NASA Official: SVS Contact: Curator: