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2008 Arctic Sea Ice from AMSR-E

Sea ice is frozen seawater floating on the surface of the ocean. Some sea ice is semi-permanent, persisting from year to year, and some is seasonal, melting and refreezing from season to season. The sea ice cover reaches its minimum extent at the end of each summer and the remaining ice is called the perennial ice cover.

The AMSR-E instrument on the Aqua satellite acquires high resolution measurements of the 89 GHz brightness temperature near the poles. Because this is a passive microwave sensor which is not so sensitive to atmospheric effects, this sensor is able to observe the entire polar region every day, even through clouds and snowfall. The false color of the sea ice, derived from the AMSR-E 6.25 km 89 GHz brightness temperature, highlights the fissures or divergence areas in the sea ice cover by warm brightness temperatures (in blue) while cold brightness temperatures, shown in brighter white, represent consolidated sea ice. The sea ice edge is defined by the 15% ice concentration contour in the three-day moving average of the AMSR-E 12.5 km sea ice concentration data.

The animations below show the continuous motion of the Arctic sea ice during 2008, from January 1 through September 14, the week during which the Arctic sea ice reached its minimum extent. The 2008 minimum extent of 4.52 sq km (1.74 sq miles) is the second lowest extent recorded since 1979.

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The animation of Arctic sea ice from January 1 through September 14, 2008. The date is displayed in the upper right corner.    The animation of Arctic sea ice from January 1 through September 14, 2008. The date is displayed in the upper right corner.
Duration: 34.0 seconds
Available formats:
  1280x720 (30 fps) MPEG-4   29 MB
  640x360 (30 fps) MPEG-4   6 MB
  1280x720 (30 fps) MPEG-2   78 MB
  512x288 (30 fps) MPEG-1   13 MB
  1280x720 (30 fps) Frames (SeaIce w dates)
  1280x720 (60 fps) Frames (SeaIce w dates)
  320x180     PNG           90 KB
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The animation of Arctic sea ice from January 1 through September 14, 2008.    The animation of Arctic sea ice from January 1 through September 14, 2008.
Duration: 34.0 seconds
Available formats:
  1280x720 (30 fps) MPEG-4   27 MB
  640x360 (30 fps) MPEG-4   6 MB
  1280x720 (30 fps) MPEG-2   77 MB
  512x288 (30 fps) MPEG-1   13 MB
  1280x720 (30 fps) Frames (SeaIce)
  1280x720 (60 fps) Frames (SeaIce)
How to play our movies


The date sequence with an alpha channel.    The date sequence with an alpha channel.

Available formats:
  1280x720 (60 fps) Frames (Date overlay)
  1280x720 (30 fps) Frames (Date overlay)
How to play our movies


Image of Arctic sea ice on March 10, 2008.    Image of Arctic sea ice on March 10, 2008.



Available formats:
  3840 x 2160     TIFF     10 MB


Image of Arctic sea ice on September 9.    Image of Arctic sea ice on September 9.

Available formats:
  3840 x 2160     TIFF     11 MB


Image of Arctic sea ice on September 12, 2008.    Image of Arctic sea ice on September 12, 2008.

Available formats:
  3840 x 2160     TIFF     11 MB


Image of Arctic sea ice on September 13, 2008.    Image of Arctic sea ice on September 13, 2008.

Available formats:
  3840 x 2160     TIFF     11 MB


Image of Arctic sea ice on September 14, 2008.    Image of Arctic sea ice on September 14, 2008.

Available formats:
  3840 x 2160     TIFF     11 MB

Short URL to This Page:http://svs.gsfc.nasa.gov/goto?3556
Animation Number:3556
Completed:2008-10-02
Animator:Cindy Starr (GST) (Lead)
Producer:Jefferson Beck (UMBC)
Platforms/Sensors/Data Sets:Aqua/AMSR-E/Daily L3 6.25 km 89 GHz Brightness Temperature (Tb) (2008-01-01 through 2008-09-14)
 Aqua/AMSR-E/Daily L3 12.5km Tb, Sea Ice Concentration, and Snow Depth (2008-01-01 through 2008-09-14)
Please give credit for this item to:
NASA/Goddard Space Flight Center Scientific Visualization Studio The Blue Marble Next Generation data is courtesy of Reto Stockli (NASA/GSFC).
 
Keywords:
DLESE >> Cryology
SVS >> HDTV
DLESE >> Physical oceanography
GCMD >> Earth Science >> Cryosphere
GCMD >> Earth Science >> Cryosphere >> Sea Ice
GCMD >> Earth Science >> Cryosphere >> Snow/Ice
GCMD >> Earth Science >> Hydrosphere >> Snow/Ice
GCMD >> Earth Science >> Oceans >> Sea Ice
GCMD >> Earth Science >> Cryosphere >> Sea Ice >> Ice Extent
GCMD >> Earth Science >> Cryosphere >> Sea Ice >> Ice Growth/Melt
GCMD >> Earth Science >> Cryosphere >> Sea Ice >> Ice Types
GCMD >> Earth Science >> Cryosphere >> Sea Ice >> Pack Ice
GCMD >> Earth Science >> Cryosphere >> Sea Ice >> Sea Ice Concentration
GCMD >> Earth Science >> Cryosphere >> Sea Ice >> Sea Ice Motion
GCMD >> Earth Science >> Cryosphere >> Snow/Ice >> Freeze/Thaw
GCMD >> Earth Science >> Cryosphere >> Snow/Ice >> Ice Extent
GCMD >> Earth Science >> Cryosphere >> Snow/Ice >> Ice Growth/Melt
GCMD >> Earth Science >> Cryosphere >> Snow/Ice >> Ice Motion
GCMD >> Earth Science >> Hydrosphere >> Snow/Ice >> Ice Extent
GCMD >> Earth Science >> Hydrosphere >> Snow/Ice >> Ice Motion
GCMD >> Earth Science >> Oceans >> Sea Ice >> Ice Extent
GCMD >> Earth Science >> Oceans >> Sea Ice >> Ice Growth/Melt
GCMD >> Earth Science >> Oceans >> Sea Ice >> Pack Ice
 
 


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Many of our multimedia items use the GCMD keywords. These keywords can be found on the Internet with the following citation:
Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 8.0.0.0.0

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