|
|
Tonix3001
Joined: 19 Feb 2002
Posts: 61
|
9/11 Aircraft Grounding Results re: Temperature
 Mon Aug 12, 2002 6:15 pm
|
 |
|
http://www.ukenvironment.org
They have published a report regarding the increase in temperature related to the grounding of aircraft on and around the 11th of Sept 2001.
David Travis at the University of Wisconsin-Whitewater.
August 08, 2002
Vapour trails' effects confirmed
The difference in daily temperatures caused by the vapour trails from aeroplanes has been confirmed as a result of research conducted during the enforced grounding of passenger aircraft in the US after the 11th September terrorist attacks.
'Clouds formed by the water vapour in the exhaust from jet planes have a small but significant effect on daily temperatures, a new study confirms.'
'The grounding of commercial flights for three days after last September's terrorist attacks in the United States gave David Travis at the University of Wisconsin-Whitewater and colleagues a chance they never thought they'd have: to study the true impact that contrails from jet engines have on our climate.' (Nature)
The difference between temperatures with vapour trails present and vapour trails absent was found to be about 1 degree Celsius. Comparing the three days before and after the enforced grounding, the difference was even greater, at about 1.8 degrees Celsius.
|
| |
|
|
Jim Peterson
Joined: 12 Jun 2002
Posts: 6
|
|
Tue Aug 13, 2002 2:46 am
|
|
|
Here is another report about the topic:
CONTRAIL INSULATION: Dr. Andrew Carleton and Dr. David Travis,
climatologists at University of Wisconsin-Whitewater, concluded that
there was an "anomalous increase in the average diurnal temperature
range for the period Sept. 11-14, 2001." The FAA grounded all air
traffic for three days after the attacks and GA was affected for much
longer than that. NASA scientists have already concluded that high-
altitude contrails can transform into high-altitude cirrus clouds. The
climatologists' research found the difference between the nighttime low
temperature and the daytime high temperature was reduced during the
study period. The researchers concluded that contrails alter
temperature the same way that natural high clouds do, and limit the
extent of temperature change from day to night. |
| |
|
|
 
|
|
All times are GMT. The time now is Fri May 25, 2012 2:31 pm
|
|
|
|
|
Login
