Columbia scientists recently visited the Caribbean island of Barbados, whose fossilized coral reefs contain an exquisite record of how the ocean has risen and fallen in the past.
May 14, 2018
February 22, 2016
Scientists have developed a new model to help coastal planners assess the risks of sea level rise. Put to use on a global scale, it estimates that the oceans will rise at least 28 centimeters on average by the end of this century – and as much as 131 cm if greenhouse gas emissions continue to grow unchecked.
February 08, 2016
Humans have been burning fossil fuels for only about 150 years, yet that has started a cascade of profound changes that at their current pace will still be felt 10,000 years from now, a new study shows. Coastal areas, in particular, will experience the long-term effects as rising seas slowly redraw the world map as we know it and continue to rise long after emissions are brought down. Even in a scenario in which global temperatures warm to only about 2° Celsius above pre-industrial times, the analysis shows that several of the world’s coastal megacities will eventually be submerged.
October 13, 2015
Nicolás Young was just named a winner of a 2015 Blavatnik Award for his work measuring ice sheets in changing climates of the past and their contribution to sea level rise. His new projects are taking glacier tracking to the next level.
December 05, 2013
The jury is still out on how tropical storms will change as climate warms, but rising sea levels will almost certainly place more coastal property at risk of flooding, says a team of scientists writing in the journal Nature.
August 08, 2013
In the northern hemisphere, ice sheets ebb and flow in 100,000-year cycles, driven by varying amounts of sunlight falling on Earth’s surface as its orbit and orientation toward the sun changes. But astronomical variations alone cannot explain why ice ages develop gradually but end quickly, in a few thousand years. Though the last ice age saw several peak-periods of sunlight, it was the last one—about 10,000 years ago—that caused the ice to withdraw from much of Europe and North America.
March 14, 2012
The seas are creeping higher as the planet warms, but scientists have not yet reached a consensus about how high they may go. Projections for the year 2100 range from inches to several feet, or more. The sub-tropical islands of Bermuda and the Bahamas contain important sites where researchers have gone looking for answers. By pinpointing where shorelines stood on cliffs and reefs there during an extremely warm period 400,000 years ago, they hope to narrow the range of global sea-level projections for the future.
September 15, 2011
The seas are rising, as they have during past periods of warming in earth’s history. Estimates of how high they will go in the next few thousand years range from five meters, putting greater Miami underwater, to 40 meters, wiping most of Florida off the map. “The range of estimates is huge to the point of meaninglessness,” says
, a climate scientist at Columbia University’s Lamont-Doherty Earth Observatory.
February 04, 2010
Scientists aboard the research ship the JOIDES Resolution recently drilled two kilometers into Earth’s crust, setting a new record for the deepest hole drilled through the seafloor on a single expedition.
March 13, 2009
Warming Climate Drives Plankton and Penguins Poleward
Adélie penguins are flocking closer to the South Pole. A new study in the leading journal Science explains why: they’re following the food supply, which is moving southward with changing climate.
September 04, 2008
North American Ice Sheet Dwindled Fast in Conditions Like Today's
In the face of warming climate, researchers have yet to agree on how much and how quickly melting of the Greenland ice sheet may contribute to sea level rise.
|Rebuilders: Solutions with Klaus Jacob|
|Basal Plumbing for the Changing (ice) Masses||Earth Science Colloquium|
|CO2, Sea Level, and Isostasy: Looking to the Past to Predict the Future||Earth Science Colloquium|
|Antarctica's Leaky Basement||Implications for Ice Sheet Dynamics, Paleoclimate Records and Microbiology|
|NOVA | Secrets Beneath the Ice||Featuring LDEO Scientist Robin Bell|
|The Ice Beneath Their Feet||Two Scientists, One Frigid Continent, and the Thrill of Discovery|
|Polar Regions||Polar Research at Lamont|
|Changes in the Arctic and Antarctic||Featuring LDEO scientist Robin Bell|
|A Slippery Slope?||The Water World Beneath the Changing Ice Sheets|