wigstheone
Aug 12, 02, 3:37 pm
The terrorist attacks on New York and the Pentagon gave climate researchers an unusual opportunity to study the effects of contrails, the drifting streaks of heavy exhaust plumes left by aircraft.
Immediately after the attacks, the Federal Aviation Administration ordered the skies cleared except for military aircraft, and the suspension of flights lasted for three days. Because of that, hardly any contrails were over the United States.
A result of that, said Dr. David J. Travis, a lead author of the study and scientist at the University of Wisconsin-Whitewater, was an unusual widening in the average daily temperature range, the difference between the day high and evening low temperatures.
http://www.nytimes.com/2002/08/12/science/12CLIM.html
Immediately after the attacks, the Federal Aviation Administration ordered the skies cleared except for military aircraft, and the suspension of flights lasted for three days. Because of that, hardly any contrails were over the United States.
A result of that, said Dr. David J. Travis, a lead author of the study and scientist at the University of Wisconsin-Whitewater, was an unusual widening in the average daily temperature range, the difference between the day high and evening low temperatures.
http://www.nytimes.com/2002/08/12/science/12CLIM.html