Climate change studies on volcano ash plane ban

Reuters reports that the recent European flying ban due to the Icelandic erupting volcano ash could help scientists understand the link between flight emissions and climate change.

The climate effects of jet fuel burned at high altitude are poorly understood, partly because scientists cannot often compare plane-free skies with days when many regions are criss-crossed by white vapor trails.

Scientists will pore over European temperature records, satellite images and other data from days when flights were grounded by ash -- trying to isolate any effect of a lack of planes from the sun-dimming effect of Iceland's volcanic cloud.

"The presence of volcanic ash makes this event much more challenging to analyze," said David Travis, of the University of Wisconsin-Whitewater, who found that an absence of vapor trails influenced U.S. temperatures after the September 11 attacks.

Read the full story: Like Sept. 11, volcano plane ban may hold climate clue

Photo from Emory Kristof / National Geographic