09 Jan '12, 11pm

Greenland’s Ice Is Growing Darker [image] #NASA

In the past, the bright surface of the Greenland Ice Sheet reflected well over half of the sunlight that fell on it. This reflectiveness helped keep the ice sheet stable, as less absorbed sunlight meant less heating and melting. In the past decade, however, satellites have observed a decrease in Greenland’s reflectiveness. This darker surface now absorbs more sunlight, which accelerates melting. The map above shows the difference between the amount of sunlight Greenland reflected in the summer of 2011 versus the average percent it reflected between 2000 to 2006. Virtually the entire ice sheet shows some change, with some areas reflecting close to 20 percent less light than a decade ago. The map is based on observations from the Moderate Resolution Imaging Spectroradiometer (MODIS) instruments on NASA’s Terra and Aqua satellites. It was produced as part of the National Ocea...

Full article: http://earthobservatory.nasa.gov/IOTD/view.php?id=76916&s...

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Satellites show Greenland's bright white surfac...

earthobservatory.nasa.gov 10 Jan '12, 2pm

In the past, the bright surface of the Greenland Ice Sheet reflected well over half of the sunlight that fell on it. This ...

Where the Trees Are [image] #NASA

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

Trees are one of Earth’s largest banks for storing the carbon that gets emitted by natural processes and human activities....

How much forest is there in the United States? ...

earthobservatory.nasa.gov 11 Jan '12, 2am

Trees are one of Earth’s largest banks for storing the carbon that gets emitted by natural processes and human activities....

2011 Global Temperatures [image] #NASA

2011 Global Temperatures [image] #NASA

earthobservatory.nasa.gov 19 Jan '12, 11pm

Nine of the top ten warmest years in the modern meteorological record have occurred since the year 2000. Last year was ano...

Wheels on ice

Wheels on ice

ferrari.com 13 Jan '12, 6pm

Madonna di Campiglio, 13 January –Under skies lit up by an amazing firework display, the race on the frozen lake brought t...

Two Earth Satellites Viewed From Houston [image...

earthobservatory.nasa.gov 15 Jan '12, 11pm

This photograph taken from Houston, Texas, juxtaposes Earth’s oldest satellite with one of its youngest. The Moon is thoug...

Sea Ice off Southwestern Alaska [image] #NASA

earthobservatory.nasa.gov 21 Jan '12, 11pm

Snow rested on the land surface while ice rested on the sea surface in southwestern Alaska in mid-January 2012. The Modera...

Emi Koussi and Aorounga, Chad [image] #NASA

earthobservatory.nasa.gov 08 Jan '12, 11pm

This striking photograph from the International Space Station features two examples of circular landscape features—labeled...