10 Feb '12, 11pm

Beautiful ocean eddy and Plankton in the Agulhas from space. Geophysical fluid dynamics is amazing

The ocean has storms and weather that rival the size and scale of tropical cyclones. But rather than destruction, these storms—better known as eddies—are more likely to bring life to the sea...and often in places that are otherwise barren. The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite captured these natural-color images of a deep-ocean eddy on December 26, 2011. The top close-up shows the vortex structure of the eddy, traced in light blue by plankton blooming in the 150-kilometer wide swirl. The lower, wider view shows the bloom and eddy in context, about 800 kilometers south of South Africa. “Eddies are the internal weather of the sea,” says Dennis McGillicuddy, an oceanographer at the Woods Hole Oceanographic Institution. They are huge masses of water spinning in a whirlpool pattern—either clockwise or counterclockwise—and they can s...

Full article: http://earthobservatory.nasa.gov/IOTD/view.php?id=77120&s...

Tweets

The Eddy and the Plankton [image] #NASA

earthobservatory.nasa.gov 10 Feb '12, 11pm

The ocean has storms and weather that rival the size and scale of tropical cyclones. But rather than destruction, these st...

More #NASA Blue Marbles, composited from a variety of sources

More #NASA Blue Marbles, composited from a vari...

earthobservatory.nasa.gov 10 Feb '12, 6pm

A day’s clouds. The shape and texture of the land. The living ocean. City lights as a beacon of human presence across the ...

Amery Ice Shelf [image] #NASA

earthobservatory.nasa.gov 11 Feb '12, 11pm

Several glaciers in East Antarctica, including the Lambert Glacier, share the same route to the ocean through the Amery Ic...

Southeastern USA at Night [image] #NASA

earthobservatory.nasa.gov 12 Feb '12, 11pm

The southern United States is known for its distinctive cultural and historical identity within the country, including dis...

The Amery Ice Shelf has a loose tooth : nasa Im...

earthobservatory.nasa.gov 11 Feb '12, 11pm

Several glaciers in East Antarctica, including the Lambert Glacier, share the same route to the ocean through the Amery Ic...