Climate

The R/V Polarstern during cruise ANTXXVI/2. Photo: Jürgen Gossler, Alfred-Wegener-Institut

In spring 2010, the research icebreaker Polarstern returned from the South Pacific with a scientific treasure—ocean sediments from a largely unexplored part of the vast, remote ocean that surrounds Antarctica—the Southern Ocean.

Sonya Dyhrman’s interest in marine biology began when she was a child, exploring tidal pools with her grandfather on the coast near her Tacoma.

As a scientist, Sean Solomon has studied Mercury, Venus and Mars. Now he heads Columbia’s Lamont-Doherty Earth Observatory, whose researchers study planet Earth, from its deepest ocean to its highest peak.

The year since Hurricane Sandy blew ashore in the New York area has been one of rebuilding and searching for how best to prevent the level of destruction and death it brought with it.

When scientists talk about climate change, they usually mean significant changes in the measures of climate over several decades or longer. Climate variability generally refers to seasonal changes over a year or so.

Michael Levi of the Council on Foreign Relations, Gavin Schmidt of Goddard Institute for Space Studies and Mike Hulme of University of East Anglia at the Hertog Global Strategy Initiative.

As the average local temperature continues to rise, climate change is a major topic on campus this summer. It is the focus of the Hertog Global Strategy Initiative, an annual interdisciplinary program that uses historical analysis to examine problems in world politics.

Extreme weather can wreak havoc on cities and their economies. Damage from hurricanes Katrina and Sandy is estimated at more than $150 billion and over $60 billion, respectively.

Researchers at Columbia Engineering and Georgia Institute of Technology have published a study in the February 4 online Early Edition of Proceedings of the National Academy of Sciences (PNAS) showing—for the first time—that certain volatile organic gases can promote cloud formatio

The National Oceanic and Atmospheric Administration officially designated 2012 as the warmest year on record for the contiguous United States. This isn't too surprising for a year that already had the warmest spring, the second warmest summer and fourth warmest winter.

Solomon led efforts to identify the cause of the ozone hole over Antarctica.

An American atmospheric chemist who led efforts to identify the cause of the Antarctic ozone hole and a French geochemist who extracted the longest-yet climate record from polar ice cores have won the prestigious 2012 Vetlesen Prize.

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