Air Traffic Affecting Climate Change?

In today’s world it's not rare to see tons and tons of airplanes in our skies. I’m sure most of you have noticed the seemingly white “smoke” trail behind them. 

These trails are actually called contrails; they are made from the moisture being condensed around the aircraft’s engine. But do not be fooled these moisture clouds are not harmless. Most of these contrails occur over the United States and Europe. They are increasing over parts of Asia, due to more traffic flow.  Over 8.3 million flights flew over the United States in 2010 alone. Air traffic contributes about 2 to 3 percent of carbon emissions. That number is expected to double or even triple in the next 50 years.
The contrails are created high enough in the atmosphere that they block the sun's radiation and heat. This might seem like a good thing considering global warming and all. It might be blocking heat, but in turn it’s also blocking heat from escaping from earth. It’s kind of like we making a bubble around ourselves, nothing in and nothing out. The day stays cooler, but the night stays warmer. Since the heat is trapped here on earth longer, it could change the heating and cooling patterns of planet. It could also change wind pattern systems, which could affect evaporation rates and agriculture. One possible solution would be to either fly the planes lower to the ground or fly around the air systems that create the contrails. The issue with this is, it would only use more fuel that would contribute even more to climate change. There’s nothing like a duel edge sword.