Yes Robert T I remember seeing that doco on sbs a while ago and it was actually quite alarming on how the water evaporation has been slowing over such a short time as you said it was very interesting!!!!
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Originally Posted by Robert_T
Hi jjjnettie thanks, that's right it was an SBS doco where I saw that stuff on contrails 
Hi Ron, what Argonavis says below has also pricked my memory a bit that the issue reported in that particular doco - i think - wasn't global warming rather the opposite where these contrails and various other airborne wastes were reflecting incident sunlight and reducing the amount of evaporation significantly at different locations around the globe, in some places by as much as 20-30% in the last 50 years - with consequences for rainfall etc etc..
cheers, |