From Daily Grist Magazine, 01 Dec 2005
A Current Despair
Waning of Atlantic currents could chill Europe
Remember that movie The Day After Tomorrow? With the shifting ocean currents that cause sudden, catastrophic climate changes? Crazy stuff! Michael Moore territory! Well … funny story. Turns out the Atlantic Ocean currents that move warm tropical waters northward and cooler waters south have in fact slowed dramatically — by about 30 percent in the past 50 years, according to a new study in the journal Nature. The likely culprit? Disruption in the salinity and density of Atlantic waters brought about by increased “freshening” with more rain and melting glaciers, thanks to global warming. This could be bad news for northwestern Europe, which depends on that hit of tropical heat for its mild climate. A total shutdown of the Atlantic current system — still deemed unlikely so far — could cool the region by several degrees over 10 to 20 years. Hello, ice age! Researchers say a lot more study is needed, but most seem alarmed by the findings. And alarmed researchers make us nervous.
straight to the source: Nature.com News, Quirin Schiermeier, 30 Nov 2005
Deconstructing Hurricane
Intense 2005 hurricane season may be harbinger of things to come
This year’s Atlantic hurricane season officially ended yesterday (at which point we emerged from basement bunker, blinking), having racked up a record-breaking 26 named storms. Thirteen of these became hurricanes, and three reached Category 5 strength, including Katrina. And over half the past two seasons’ storms have made landfall, compared to an average of 9 percent from 1995 to 2003. “It was incredibly out of the ordinary,” said federal hurricane specialist Jack Beven. Some researchers say we may see more such destructive storms in years to come, thanks in part to warmer sea-surface temperatures in the tropics. A natural-cycle variation or global warming? Most experts are unwilling to come down on one side or the other. “This season was such an extreme event that it’s a little difficult to believe it could repeat itself on a regular basis,” said Beven. “But it’s too early to tell what the next season will bring.”
straight to the source: Reuters, Erwin Seba, 30 Nov 2005
straight to the source: The New York Times, Amy Goodnough, 30 Nov 2005
straight to the source: The Christian Science Monitor, Peter N. Spotts, 30 Nov 2005