Tag: climate

Goddard Institute to Aid Search for Life on Distant Worlds

by | 4.22.2015 at 10:40am
Courtesy NASA

Despite its name, the NASA Goddard Institute for Space Studies has in recent years concentrated on planet Earth–mainly, its widely used computer models used by scientists around the world to measure and predict the impact of greenhouse gases on climate. This week NASA announced that the Earth Institute-affiliated center will also play a leading role in a new initiative to search for life on other planets.

Photo Essay: Iceland at the Cutting Edge of Climate Change

by | 4.13.2015 at 4:21pm | 1 Comment
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Iceland has a complicated relationship with climate change. As in much of the far north, global warming is already exerting many effects here–arguably both good and bad. Yet the country contributes relatively little to the warming, since most of its energy comes from geothermal and hydro plants, which produce little carbon dioxide. Now, it is on the scientific cutting edge of the issue.

In the Ice

by | 4.10.2015 at 9:12am
Some examples of the sea ice that we have encountered so far. Top left: bands of grease ice, Top right: small pancake ice merged together; bottom left: larger pancake ice; bottom right: The Nathaniel B. Palmer steaming through dense sea ice cover.

Several days ago we reached our main work areas along the margin of East Antarctica. Our expedition is relatively late in the season and the seas around Antarctica are starting to freeze.

Closing in on Antarctica

by | 4.6.2015 at 11:29am
During our transit south to Antarctica we deployed seven ARGO floats (yellow device in picture) for the University of Washington. They drift with the currents in the oceans, measure profiles of salinity and temperature and send those via satellite to researchers on land. They are part of an international effort to better monitor the conditions of the oceans.

We are less than a day away from our first study area on the continental shelf in front of the Dibble Glacier. As we approach Antarctica we are starting our science program with a 4500 meter deep CTD and multibeam acquisition.

On Our Way: Avoiding the Storm

by | 3.30.2015 at 10:24am
Map showing the planned track of our expedition with the modifications made due to the storm systems. Our main study areas are on the continental shelf in front of some major East Antarctic glaciers.

We are now aboard the R/V Palmer and on our way to East Antarctica. Due to two storms in our direct way we are heading west first to go around the storms and we’ll then head south on their backside.

Abyssal Rhythm

by | 3.13.2015 at 11:00am
When sea level drops, pressure at mid-ocean ridges decreases, which may influence the production of ocean crust. A new study suggests that the pattern of hills on the sea floor reflects the timing of sea-level change during ice age cycles. ILLUSTRATION: ADAPTED BY P. HUEY/SCIENCE

Since the dawn of mankind, I imagine we’ve gazed
In wonder and awe at the sky’s starry crown;
More recently, we have been deeply amazed
By the long-obscured, staggering view looking down
To the depths of the sea, through crust, and below…

Upcoming Scientific Fieldwork, 2015 and Beyond

by | 3.10.2015 at 11:24am
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On every continent and ocean, Earth Institute field researchers study the dynamics of climate, geology, ecology, human history and more. Here is a list of expeditions going on this year, and beyond.

Initiative on Extreme Weather and Climate Kick-Off

by | 2.25.2015 at 10:33am
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This week marks the launch of the new Columbia Initiative on Extreme Weather and Climate, a cross-disciplinary collaboration between a variety of centers, research groups and individuals from across Columbia University. The Initiative, led by Adam Sobel, kicked off on Monday evening with a World Leaders Forum panel event in Low Library. Panelists discussed a wide range of science and policy topics related to extreme weather, showing the interdisciplinary nature of the new Initiative.

Birth of a Desert

by | 1.30.2015 at 11:47am
About 10 thousand years ago, North Africa's Sahara Desert was a wide, green landscape. (photo credit: apdesign)

North Africa once was quite green,
From ancient lakes, clues we can glean:

What Will You Leave Behind? How Personal Legacy Affects Pro-environmental Behavior

by | 1.8.2015 at 12:27pm
Available from: https://www.flickr.com/photos/pedrosimoes7/13910019233

New research from the Center for Research on Environmental Decisions finds that personal legacy can be a motivator to encourage pro-environmental behaviors.