Lamont-Doherty Earth Observatory167
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Rhone Glacier Finely Tuned to Climate Changes
By chiseling hunks of stone from recently exposed bedrock near the edge of the Rhone Glacier, scientists were able to decipher the comings and goings of the ice over the past 11,000 years. That should help predict what will happen to glaciers in the warming world to come.
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Tree Rings Open Door on 1,100 Years of El Niño
Scientists have used tree-ring data from the American Southwest to reconstruct a 1,100-year history of the El Niño cycle that shows that, when the earth warms, the climate acts up. The research may improve scientists’ ability to predict future climate and the effects of global warming.
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Switchyard Project: A Very Successful Year
The 2011 field season has been a very very successful year, in fact the most successful one we have ever had. The weather has been great, the equipment proved to be mostly reliable, the people have been great and the samples are plenty.
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Science Education with Trees and Canoes
Students from New York City, Singapore and the Netherlands test their skills this weekend in the woods and on the water near Lamont-Doherty Earth Observatory in the International Student and Teacher Exchange Program.
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A Focus on the Thinning Northwest Greenland Glaciers
Blog by Hakim Abdi, LDEO Satellite measures showing thinning ice on the Northwest Greenland glaciers prompted Operation IceBridge to include annual flights over this region. The area runs along the Baffin Bay coast, which is often covered in fog and low lying clouds forcing delays and reschedules. With the end of our season in sight…
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Measuring Gravity From a Moving Aircraft Requires a ‘Gravi-God’!
From: Joël Dubé, Engineer/Geophysicist at Sander Geophysics, OIB P-3 Gravity Team One of the instruments used in Operation IceBridge (OIB) is an airborne gravimeter operated through a collaboration between Lamont Doherty Earth Observatory of Columbia University and Sander Geophysics of Ottawa, Canada. People from other instrument teams have been heard to call it a gravity…
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Switchyard Project: Melting Ice, a Fresher Arctic
The freshwater content of the Arctic Ocean is increasing as the Earth’s climate warms. Chemical analysis indicates that the source is both melting ice and the Pacific Ocean.
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Witnessing time – from 445 million year old rocks exposed in the Fjords to ~4 thousand year old small ice caps
By Hakim Abdi, LDEO. My first flight on the P3 and the scenery was nothing short of breathtaking. The science mission involved flights in the north over the Steensby glacier that passes through Sherard Osbron Fjord, and Ryder glacier constrained by the Victoria Fjord. In northeast Greenland we overflew the Hagen glacier and the Flade…
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Switchyard Project: New Sampling Record
On May 10, we celebrated the sampling of our 10th station yesterday. These are more stations than we were ever able to get water samples from. Because of the ongoing good weather, we will certainly get one more station today, and hopefully many more during the next couple of days. So watch the posted video and celebrate with…
