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  1. attheu.utah.edu

    Sep 30, 2024Polar sea ice is ever-changing. It shrinks, expands, moves, breaks apart, reforms in response to changing seasons, and rapid climate change. It is far from a homogenous layer of frozen water on the ocean's surface, but rather a dynamic mix of water and ice, as well as minute pockets of air and brine encased in the ice.
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  3. How sea ice forms. Sea ice forms, grows, and melts in salty ocean water. ... The inability to measure at night is a problem for measuring sea ice, which exists in polar regions where darkness prevails. ... and land Elevation Satellite (ICESat), launched in 2002 by NASA, was designed for studying ice-covered regions. NASA launched a new mission ...
  4. science.nasa.gov

    This flattening is called "oblateness," and measuring its changes is a key part of tracking ice loss from polar regions. ... This new method reveals more ice loss and larger increases in ocean water than previously estimated: an increase of 0.08 millimeters per year for sea level rise, along with an additional 15.4 gigatons of ice loss each ...
  5. scitechdaily.com

    Oct 7, 2024Researchers in Utah specializing in mathematics and climate studies have developed new models to better understand sea ice, revealing it to be less solid than commonly perceived. Polar sea ice is constantly changing. It expands and contracts, drifts, fractures, and reforms with the changing seasons and the accelerating impact of climate change.
  6. sciencedirect.com

    Mar 1, 2024The SLR allows for the ice sheet mass estimates of the polar regions. The secular trends obtained for Greenland are equal to −108.8 and −110.6 Gt/year whereas for West Antarctica these are −92.9 and −105.0 Gt/year from SLR and GRACE expanded to degree and order 10, respectively for the common periods and after removing the GIA effect.
  7. ncbi.nlm.nih.gov

    National Center for Biotechnology Information

    https://www.ncbi.nlm.nih.gov › pmc › articles › PMC9477384

    Glaciers are retreating in most mountainous regions. The ice sheets that cover Greenland and Antarctica are thinning. ... Other teams have used the relative motions of pairs of satellites to more directly measure ice loss on a broad scale. But now NASA's ICESat-2, a satellite launched in 2018, is measuring ice loss at a large number of ...
  8. jpl.nasa.gov

    The study found that Greenland's ice sheet lost an average of 200 gigatons of ice per year, and Antarctica's ice sheet lost an average of 118 gigatons of ice per year. One gigaton of ice is enough to fill 400,000 Olympic-sized swimming pools or cover New York's Central Park in ice more than 1,000 feet (300 meters) thick, reaching higher than ...
  9. science.nasa.gov

    Aug 23, 2023The Antarctic ice sheet's mass has changed over the last decades. Research based on satellite data indicates that between 2002 and 2023, Antarctica shed an average of 150 billion metric tons of ice per year, adding to global sea level rise. These images, created from GRACE and GRACE-FO data, show changes in Antarctic ice mass since 2002.
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