Climate266
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Arrival: Buenos Aires
We arrived in Argentina after a night in the air—maybe the first time I’ve ever gotten a (nearly) decent night’s sleep on a plane. We took a taxi across the city. It’s hot and flat, and our taxi driver explains that they’ve had torrential rains for several weeks; all the lowlands alongside the highway are…
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Following the Trail of Ancient Icebergs
A few days ago we reached our main study area in the eastern Amundsen Sea. Here we are using sonar to map the contours of the seafloor in great detail. During the last glaciation the Antarctic ice sheet was much larger and covered most of the continental shelf, an underwater extension of the continent that…
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Climate, Fires and Birds: How is the Tundra Changing?
Natalie Boelman is an ecologist at Lamont-Doherty Earth Observatory who studies the effects of climate change on organisms throughout the food chain. She first visited the Alaskan Arctic in 2001, and will return to the North Slope this spring and summer to continue a wildfire-mapping project and to set up a field study that will…
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Climate Change Leaders Join Jeff Sachs in Discussion on Post-Copenhagen Action
Nearly 100 people including several UN ambassadors, corporate executives, foundation leaders and key representatives from NGOs and academia gathered at Columbia University to attend a brainstorm session on a way forward after December’s Climate Change Conference in Copenhagen. Led by Earth Institute Director Jeff Sachs, the agenda covered topics including improvements to the United Nations…
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Jaunt to Nearby Island Becomes Four-Day Epic
Going to Antarctica involves a whole lot of paperwork. Before I left, I filled out an extensive medical history, was tested for every disease imaginable, gave my pants size, shoe size, hat size, until I had only one form remaining. That was the waiver acknowledging that working in Antarctica is inherently dangerous and that by…
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So Much Depends on Sea Ice
Where we work and how we get there depends on the sea ice. The Oden is a powerful icebreaker but it is often faster and more fuel-efficient to go around heavy sea ice then to chop our way through. If the sea ice is several feet thick, we often choose to detour. We actually consult…
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Urbanization, Deforestation, Reforestation
2009 was noted as the first year that more people lived in urban spaces than in rural areas. The hope that a majority urban population would slow the clearing of tropical forests — our most effective carbon sinks — seems, however, to have been misplaced. The idea was simple: if more people moved into forested…
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Is Ocean Water Helping to Melt Glaciers?
After crossing the Ross Sea, we’ve reached our first study area: the “Little America Trough.” The oceanographers on board want to find out if warmer water from the deep ocean is rising onto the continental shelf and reaching the ice, making it melt faster. They measure temperature and salinity as well as the water currents.…
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Urbanization, Export Crops Drive Deforestation
In Reversal, Land Is Cleared for Global Trade and Big Cities, Says Study