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The natural world. Looking pretty for 3.5b years.

Oceans Melting Greenland...or OMG

Oceans Melting Greenland...or OMG

Author: Hugh Bollinger/Saturday, April 23, 2016/Categories: natural history, photography, space science, sustainability, environment, climate change

Greenland Fjords and Undersea Canyons, Deepest Depths in Darkest Blue (credit: NASA Earth Expeditions)

Greenland's ice sheet touches the ocean along more than 27,000 miles of rugged coastline. According to NASA, the island's fjords, inlets, and bays all bring seawater to the edge of the ice, and in some places, extend under it. This top and bottom dual interaction creates a stuation where the ice sheet melts from warm air temperatures above while also being melted by warm currents from below. Researchers with the Jet Propulsion Laboratory at CalTech have launched the Oceans Melting Greenland or the OMG project, a field campaign to measure these changes in the ice dynamics.

OMG combines airborne and ship-based environmental measurements to study the role of the oceans in melting Greenland’s ice. The first data was gathered in 2015 in the 5-year project. The research team is creating sea vessel-based radar profiles of the seabed in order to better model how warm, deep ocean water flows into the fjords and reaches up to the glacier edges. The JPL efforts will help determine where deep Atlantic warm water reaches the ice through the complicated currents and circulation around these undersea canyons.

NASA has utilized some animation to illustrate the new Greenland ice monitoring program:

Oh My God, indeed!

WHB

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