Summers on the Norwegian archipelago of Svalbard are now warmer than at any other time in the last 1,800 years, including during medieval times when parts of the northern hemisphere were as hot as, or hotter, than today, according to a new study in the journal Geology.
icePod: Development of an Ice Imaging System for Monitoring Changing Ice Sheets Mounted on the NYANG LC-130
This project will develop an integrated ice imaging system capable of measuring in detail both the ice surface and the ice bed. TheicePod system will be installed and operated on New York Air National Guard LC-130 aircraft during routine and targeted missions across Antarctica and Greenland as a shared community research facility providing data to scientists and educators globally. The fundamental data sets produced by the icePod system are necessary to support the development of accurate ice sheet models to predict sea level rise. The icePod system will consist of a suite of imaging sensors mounted in an external pod carried on New York Air National Guard LC-130’s to map the surface and subsurface ice topography of ice sheets, ice streams and outlet glaciers.
AGAP: Exploring the Gamburtsev Subglacial Mountains in Antarctica during the International Polar Year
Scientists from several nations are working together to launch a flagship program to explore a major mountain range buried by a large continental ice sheet and bounded by numerous subglacial lakes.
Using geophysical instruments, GAMBIT will peal back more than 600 meters of ice to explore the last hidden mountain range on Earth.
|Name||Title||Fields of interest|
|Gordon Bromley||Postdoctoral Research Fellow||Glacial geomorphology, palaeoclimate of the tropics and Antarctica, tropical glaciers and hydrology|
|Dorothy M. Peteet||Adjunct Senior Research Scientist||Paleoclimate, paleoecology, climate modeling, wetland carbon storage, palynology.|
|Douglas G. Martinson||Lamont Research Professor||Oceans and their role in climate; onset and termination of ice ages.|
|Michael Kaplan||Lamont Assistant Research Professor||Quaternary and glacial geology, geomorphology, geochronology, paleoclimatology, ice sheet dynamics, limnogeology, cosmogenic surface exposure dating|
|Nicholas Frearson||Senior Staff Associate|
|Robin E. Bell||Palisades Geophysical Institute/Lamont Research Professor||Ice Sheet Dynamics and Mass Balance, Continental Dynamics, Estuarine Processes, Linkages between ice sheet processes and subglacial geology. Interaction of ecosystems and geologic systems from microbes to benthic habitats. Tectonic uplift and feedback mechanisms, Interaction of tectonics and ice sheet dynamics. Gravity and magnetic measurement techniques for marine and airborne applications. Gravity gradiometry.|
September 27, 2012
August 03, 2012
Human civilization arose during the relatively balmy climate of the last 10,000 years. Even so, evidence is accumulating that at least two cold spells gripped the northern hemisphere during this time, and that the cooling may have coincided with drought in the tropics. Emerging research on climate during this Holocene period suggests that temperature swings were more common than previously thought, and that climate changes happened on a broad, hemispheric scale.
June 24, 2011
Stronger ocean currents beneath West Antarctica’s Pine Island Glacier Ice Shelf are eroding the ice from below, speeding the melting of the glacier as a whole, according to a new study in Nature Geoscience. A growing cavity beneath the ice shelf has allowed more warm water to melt the ice, the researchers say—a process that feeds back into the ongoing rise in global sea levels. The glacier is currently sliding into the sea at a clip of four kilometers (2.5 miles) a year, while its ice shelf is melting at about 80 cubic kilometers a year - 50 percent faster than it was in the early 1990s - the paper estimates.
March 02, 2011
Scientists working in the remotest part of Antarctica have discovered that liquid water locked deep under the continent’s coat of ice regularly thaws and refreezes to the bottom, creating as much as half the thickness of the ice in places, and actively modifying its structure.
June 25, 2010
Scientists still puzzle over how Earth emerged from its last ice age, an event that ushered in a warmer climate and the birth of human civilization. In the geological blink of an eye, ice sheets in the northern hemisphere began to collapse and warming spread quickly to the south. Most scientists say that the trigger...
October 09, 2009
Starting this month, a giant NASA DC-8 aircraft loaded with geophysical instruments and scientists will buzz at low level over the coasts of West Antarctica, where ice sheets are collapsing at a pace far beyond what scientists expected a few years ago.
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.
March 14, 2006
The retreat of a massive ice sheet that once covered much of northern Europe has been described for the first time, and researchers believe it may provide a sneak preview of how present-day ice sheets in Greenland and Antarctica will act in the face of global warming.
January 25, 2006
Lying beneath more than two miles of Antarctic ice, Lake Vostok may be the best-known and largest subglacial lake in the world, but it is not alone down there. Scientists have identified more than 145 other lakes trapped under the ice. Until now, however, none have approached Vostok’s size or depth.
April 07, 2005
Scientists from the Lamont Doherty Earth Observatory (LDEO) have provided new evidence that ocean circulation changes lagged behind, and were not the cause of, major climate changes at the beginning and end of the last ice age (short intervals known as glacial boundaries), according to a study published in the March 2005 issue of Science magazine.
|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|
|Extreme Science||An Antarctic Expedition in Search of Lost Mountains|
|A Slippery Slope?||The Water World Beneath the Changing Ice Sheets|