Earth  ID: 3180

MODIS Daily Global Snow Cover and Sea Ice Surface Temperature as seen in the SIGGRAPH 2005 Electronic Theater

This animation showing snow cover and sea ice surface temperature in the Northern Hemisphere portrays data collected from daily MODIS satellite images acquired during the winter of 2002-2003. Darkness increases with the onset of autumn, reaching a maximum at the Winter Solstice on December 21st. Thereafter, the circle of darkness shrinks as the period of daylight increases. Daily changes in sea ice are shown as ice surface temperature, which is related to the air temperature and the concentration of the sea ice. Sea ice surface temperatures range from about -40 to -2 degrees Celsius. Here, ice surface temperatures are depicted by colors, described by a color bar shown below. The snow tracks of several winter storms across the United States can be clearly seen. With an albedo of up to 80 percent or more, snow-covered terrain reflects most of the incoming solar radiation back into space, cooling the lower atmosphere. When snow cover melts, the albedo drops suddenly to less than about 30 percent, allowing the ground to absorb more solar radiation, heating the Earth's surface and lower atmosphere. Rapid changes in albedo, resultingfrom snowfall and snow melt, cause significant changes in the regional energy balance. This animation was accepted into the prestigious 2005 SIGGRAPH Electronic Theater, where it was shown during the annual conference from July 31 through August 4, 2005 in Los Angeles, CA. For more information on the data sets used in this visualization, visit NASA's EOS DAAC website.

For More Information

Visualization Credits

Cindy Starr (GST): Lead Visualizer
Greg Shirah (NASA/GSFC): Animator
Marte Newcombe (GST): Animator
Michael Starobin (HTSI): Narrator
Dorothy Hall (NASA/GSFC): Scientist
George Riggs (Science Systems and Applications Inc. (SSAI)): Scientist
Cindy Starr (GST): Writer
Dorothy Hall (NASA/GSFC): Writer
George Riggs (Science Systems and Applications Inc. (SSAI)): Writer

Full Animation Credits:

Directed by
Dr. Dorothy K. Hall
NASA Goddard Space Flight Center

Produced by
Dr. Horace G. Mitchell
Scientific Visualization Studio
NASA Goddard Space Flight Center

'Luna D'Espagna'
Composed and Performed by
Robert Hitz
Courtesy of Zederwalt Music

Randall Jones, Global Science and Technology
Alex Kekesi, Global Science and Technology
Kevin Mahoney, Computer Sciences Corporation
Lori Perkins, NASA
Stuart Snodgrass, Global Science and Technology
Eric Sokolowsky, Global Science and Technology
James W. Williams, Global Science and Technology

Audio Recording by
Fred Kemman, Honeywell Technology Solutions

Audio Mixing by
Mike Velle, Honeywell Technology Solutions

MODIS data courtesy of the
MODIS Science Team
Dr. Vince Salmonson, Team Lead
NASA Goddard Space Flight Center

SeaWiFS data courtesy of the
SeaWiFS Project
NOTE: All SeaWiFS images and data presented on this web site are for research and educational use only. All commercial use of SeaWiFS data must be coordinated with GeoEye (NOTE: In January 2013, DigitalGlobe and GeoEye combined to become DigitalGlobe).

Blue Marble MODIS data composite courtesy
of the MODIS Science Team
and the
NASA Earth Observatory
Reto Stockli, Science Systems and Applications, Inc.

The Blue Marble data is courtesy of Reto Stockli (NASA/GSFC).

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Data Used:
SeaStar/SeaWiFS/Monthly Land Reflectance 2002/07/01 - 2003/05/31
Aqua/MODIS/Sea Ice Extent and Ice Surface Temperature Daily L3 Global 4km EASE-Grid Day (MYD29E1D) 2002/07/01 - 2003/05/31
Terra and Aqua/MODIS/Blue Marble: Next Generation 1/1/2004 - 12/31/2004
Terra/MODIS/Snow Cover Daily L3 Global 0.05Deg CMG (MOD10C1) 2002/07/01 - 2003/05/31
Note: While we identify the data sets used in these visualizations, we do not store any further details nor the data sets themselves on our site.

This item is part of these series:
Modis Daily Snow and Sea Ice Temperature 2002-2003
Narrated Movies

DLESE >> Cryology
GCMD >> Earth Science >> Cryosphere >> Sea Ice >> Ice Temperature
GCMD >> Earth Science >> Cryosphere >> Snow/Ice >> Snow Cover
GCMD >> Earth Science >> Hydrosphere >> Snow/Ice >> Snow Cover
GCMD >> Earth Science >> Hydrosphere >> Snow/Ice >> Snow/Ice Temperature
DLESE >> Narrated
SVS >> Voice Over Talent
NASA Science >> Earth

GCMD 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