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Skybird · 02-07-17, 10:37 AM

And your point is?

Contrails indeed can influence weather (weather = climate, the firts is short-termed, the latter is long-termed). This has been shown especially in the few days after 9/11, when the American airspace was practically aircraft-free and all non-military flights were grounded. The range between highest and lowest temperature on the ground over the day was wider, and the maximum temp over the day was higher. The results were statistically reliable, they did not represent random fluctuations. -> You need to look in I think Nature Magazine, 2003 or 2002 or 2004, it was published there.

Volcanic activity is known since long time to have caused some of the most drastic climate changes in Earth's history.

02-07-17, 10:37 AM	#1506
Skybird Soaring Join Date: Sep 2001 Location: the mental asylum named Germany Posts: 40,662 Downloads: 9 Uploads: 0	And your point is? Contrails indeed can influence weather (weather = climate, the firts is short-termed, the latter is long-termed). This has been shown especially in the few days after 9/11, when the American airspace was practically aircraft-free and all non-military flights were grounded. The range between highest and lowest temperature on the ground over the day was wider, and the maximum temp over the day was higher. The results were statistically reliable, they did not represent random fluctuations. -> You need to look in I think Nature Magazine, 2003 or 2002 or 2004, it was published there. Volcanic activity is known since long time to have caused some of the most drastic climate changes in Earth's history. __________________ If you feel nuts, consult an expert.