National
Geographic News: Earth's jet
streamsâmdash;high-altitude winds that
influence storm directionâmdash;may be
changing due to global warming, possibly making it easier for
hurricanes to form, a new study says.
Jet streams in both the Northern and Southern Hemispheres have moved toward the poles and are slightly higher now than they were in 1979, according to analyses of data collected between 1979 to 2001.
Researchers also discovered that the jet stream in the Northern Hemisphere, which can affect the formation of hurricanes over the Atlantic Ocean, is a little weaker than it was two decades ago.
More studies are needed to conclusively link the shifts to global warming, the scientists say.
Jet streams in both the Northern and Southern Hemispheres have moved toward the poles and are slightly higher now than they were in 1979, according to analyses of data collected between 1979 to 2001.
Researchers also discovered that the jet stream in the Northern Hemisphere, which can affect the formation of hurricanes over the Atlantic Ocean, is a little weaker than it was two decades ago.
More studies are needed to conclusively link the shifts to global warming, the scientists say.
