science space greenland ice nasa elevation remote_sensing climate_change
Analysis Shows Changes In Greenland Ice Sheet

by Txchnologist staff

A NASA satellite and aircraft have been monitoring the ice sheet that sits on top of Greenland for years. An analysis of their data is providing a dynamic view of the sheet as it loses mass.

The Greenland ice sheet covers about 80 percent of the island with a cap that averages a mile in thickness. In some areas, it can be up to almost two miles thick. It comprises almost 684,000 cubic miles of ice, which would significantly raise sea levels if it melts.

Top Image: Adventure tourists near an Iceberg in Ittoqqortoormiit in eastern Greenland via Shutterstock.

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tech science satellite winter great_lakes modis aqua earth_observing_satellites ice freeze

NASA just released this image of the very frozen Great Lakes taken by one of its satellites on Feb. 19. A NOAA analysis found that the lakes were more than 88 percent covered in ice in mid-February, one of the largest freezes in four decades.
The space agency’s Moderate Resolution Imaging Spectroradiometer, carried aboard the Aqua satellite, took the false-colored image that highlights the freeze up. Analysts combined shortwave infrared, near infrared and red bands reflected from Earth to the instrument to create this picture, which highlights the difference between ice, snow, water and clouds.
A NASA release says unfrozen water appears inky blue-black. Ice is pale blue, with thicker ice appearing brighter and thin, melting ice appearing a darker true-blue. Snow appears blue-green. Clouds are white to blue-green, with the colder or icy clouds appearing blue-green to blue. See the full-sized image here. [[MORE]]

NASA just released this image of the very frozen Great Lakes taken by one of its satellites on Feb. 19. A NOAA analysis found that the lakes were more than 88 percent covered in ice in mid-February, one of the largest freezes in four decades.

The space agency’s Moderate Resolution Imaging Spectroradiometer, carried aboard the Aqua satellite, took the false-colored image that highlights the freeze up. Analysts combined shortwave infrared, near infrared and red bands reflected from Earth to the instrument to create this picture, which highlights the difference between ice, snow, water and clouds.

A NASA release says unfrozen water appears inky blue-black. Ice is pale blue, with thicker ice appearing brighter and thin, melting ice appearing a darker true-blue. Snow appears blue-green. Clouds are white to blue-green, with the colder or icy clouds appearing blue-green to blue. See the full-sized image here

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The Science Of Ice

Ever wonder what makes ice slippery? As it turns out, the answer is more complex than this simple question lets on. It has to do with the unique attributes of water molecules and nearly frictionless movement over ice.

There is a lot of slipping and sliding now in the spotlight because of the skating, skiing and curling going on at the 2014 Winter Olympics. That’s why the National Science Foundation and NBC Learn put together a video primer on the science of ice.

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weather blizzard nor_easter wunderground infographic snow ice storm

While much of the country is hanging heavily in the blue and purple parts of the current temperature map, Wunderground posted this interesting infographic on winter storms. Illustrator and artist Jerimiah Brown created the graphic. Click here to see it big at Visual.ly.[[MORE]]

While much of the country is hanging heavily in the blue and purple parts of the current temperature map, Wunderground posted this interesting infographic on winter storms. Illustrator and artist Jerimiah Brown created the graphic. Click here to see it big at Visual.ly.

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