19 May '11, 12pm

Arctic Snow and Ice Cool the Earth [image] #NASA

Arctic Snow and Ice Cool the Earth [image] #NASA

Snow and ice play an important role in keeping our planet cool, though not in the way you might think. Snow and ice are bright. They reflect light and energy from the Sun, sending most of it back into space instead of letting it warm the ground. When snow and ice disappear, the dark- colored ocean and land soak up energy instead of reflecting it. Snow and ice don’t have the same cooling power all year round. During winter, snow and ice dominate the Arctic landscape, but there is no sunlight to reflect. This means that the Arctic doesn’t do much to keep global temperatures cool during the winter. In summer, the Arctic is bathed in light constantly, but there isn’t as much snow and ice to reflect the light back into space. This series of images depicts the amount of energy that snow and ice reflect in each season of the year. The maps were made by combining satellite measure...

Full article: http://earthobservatory.nasa.gov/IOTD/view.php?id=50653&s...

Tweets

disappearingIce

disappearingIce

climateprogress.org 19 May '11, 9pm

One of the key aspects of the expedition were large-scale sea ice thickness measurements in the inner Arctic, in which res...

Melting ice roads in Arctic could have big impact

Melting ice roads in Arctic could have big impact

enn.com 30 May '11, 3pm

RELATED ARTICLES Arctic nations eye future of world's last frontier May 12, 2011 06:28 AM Arctic May Boost Oil and Gas Res...

@JonRIvins you seen this

@JonRIvins you seen this

environmentalgraffiti.com 28 May '11, 5pm

Now we know why all our glaciers are disappearing, no, it’s not due to global warming after all, it’s because a Norwegian ...

Study links 1,000-year Arctic storm to climate ...

climateprogress.org 23 May '11, 5pm

“One of the most ominous threats of global warming today is from rising sea levels, which can cause marine waters to inund...

Valle Caldera, New Mexico: Acquired May 22, 200...

earthobservatory.nasa.gov 21 May '11, 10pm

Spanning about 22 kilometers (14 miles), Valles Caldera in New Mexico was formed from the collapse of a magma chamber foll...

Valle Caldera, New Mexico [image] #NASA

earthobservatory.nasa.gov 21 May '11, 10pm

Spanning about 22 kilometers (14 miles), Valles Caldera in New Mexico was formed from the collapse of a magma chamber foll...

Avachinsky Volcano, Kamchatka Peninsula [image]...

earthobservatory.nasa.gov 15 May '11, 10pm

The Kamchatka Peninsula of Russia, located along the Pacific “ring of fire,” includes more than 100 volcanoes. While most ...

Amman, Jordan [image] #NASA

earthobservatory.nasa.gov 14 May '11, 10pm

About 9,000 years ago, a settlement was founded in an area of rolling hills between the fertile Jordan River Valley to the...

de

de

earthobservatory.nasa.gov 29 May '11, 11pm

Natural Disasters and NASA - What Is The Agency's Role? An Interview with Michael Goodman May 17, 2011 Working with basic ...

Going off-grid delivers power to the poor without costing the Earth - Earth Times

Going off-grid delivers power to the poor witho...

earthtimes.org 21 May '11, 12pm

Among the eight Millennium Development Goals (MDGs) that all 192 members of the United Nations have signed up to achieve b...

The Salty Seas of Earth

The Salty Seas of Earth

enn.com 20 May '11, 10pm

Final preparations are under way for the June 9 launch of the international Aquarius/SAC-D observatory. The mission's prim...

Amman, Jordan: Acquired December 3, 2010, this ...

earthobservatory.nasa.gov 14 May '11, 10pm

About 9,000 years ago, a settlement was founded in an area of rolling hills between the fertile Jordan River Valley to the...

Amman, Jordan: Acquired December 3, 2010, this ...

earthobservatory.nasa.gov 14 May '11, 10pm

About 9,000 years ago, a settlement was founded in an area of rolling hills between the fertile Jordan River Valley to the...

Get your day started on a green foot with our d...

blog.nature.org 26 May '11, 2pm

Today’s news will help you go green at home, at school and at the store: The country’s first large-scale textile recycling...