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Before this happened I don’t think anyone had actually stopped to consider just how much our love affair with aviation has come to dominate our surroundings, especially in a big busy airspace like that above London. But now that the telltale pollution trails have vanished we all notice, blissfully. I’ve just cycled into town, and the whole way I had my head tilted upwards, admiring the lack of contrails. It felt so… special.
Originally posted by Essan
I was just looking at the sky and how clear it was. 2 days running (thursday was cloudy) now. I don't care if planes never fly over Britain again. We finally got our skies back (even if they are somewhat hazy on the horizon!)
It had been hypothesized that contrails may affect the weather, reducing solar heating during the day and radiation of heat during the night by increasing the albedo. The suspension of air travel for three days in the United States after September 11, 2001 provided an opportunity to test this hypothesis. Measurements did show that without contrails the local diurnal temperature range (difference of day and night temperatures) was about 1 degree Celsius higher than immediately before.
"Climatologist David Travis (University of Wisconsin-Whitewater) and colleagues studying the contrail-free skies over the United States in the aftermath of the September 11 terrorist attacks, when flights over U.S. airspace were grounded. They compared satellite imagery collected September 11-13 with 30 years of cloud-cover data and assembled a history of the temperatures across North America at the same time of year for the same period.
Originally posted by dashar
People up around Manchester area are enjoying beautiful blue clear cloudless skys .
Originally posted by 911stinks
Just wondering, is anyone feeling better, or different?
I'm seeing lots of reports of what appears to be a positive
Grounding of planes across Europe 'could lead to rise in temperatures'
By Daily Mail Reporter Last updated at 4:40 PM on 17th April 2010
Temperatures in Europe could rise as a result of planes being grounded across the continent, according to research. A study conducted after commercial flights were grounded for three days following the September 11 terror attacks found the average daily temperature range in the U.S. rose markedly - exceeding the three-day periods before and after by 1.8c. Scientists claimed this showed that clouds formed by the water vapour in the exhaust from jet planes have a small but significant effect on daily temperatures. Read more: www.dailymail.co.uk...