Keep your eye on the sky!

Yeah, got sunburnt today admiring that sky. The contrails were blooming up huge and blowing slowly and very evenly towards the West-NorthWest.

It was especially good very early on (although there were less trails) when the sun was shining low and parallel to the contrail from the E-N-E, causing a huge long shadow to extend out the front of each of the Melbourne-bound planes.

It reminded me that in the days following 9/11 when all US airtravel was grounded, the average insolation measured across the USA increased by about 3%. We wouldn’t get a fraction of the contrail cover the Yanks get, but it does show that those contrails have a significant cooling effect on our climate
Maybe this can give people ideas on how to counteract the CO2-induced warming that’s occurring?

Deref said :

chris_underscore said :

Aren’t contrails supposed to fade relatively quickly?

Depends entirely on the prevailing weather. If the air up there is still and stable they can hang around for ages.

Now get ready for the chemtrail loonies to come out of the woodwork.

Further, the prevailing air temperature will have a huge effect. The exhaust gas temperature of a jet airliners engines will be about 900 deg C. The bigger the difference between that and the moisure laden air, the more spectacular the contrails will be.

chris_underscore said :

Aren’t contrails supposed to fade relatively quickly?

Depends entirely on the prevailing weather. If the air up there is still and stable they can hang around for ages.

Now get ready for the chemtrail loonies to come out of the woodwork.

I was looking at the sky today and wondering why there were so many trails…..some lingered and spread throughout the sky over hours..

Aren’t contrails supposed to fade relatively quickly?