n3eg wrote:
Not so fast, Larry.
Thunderstorm cold cloud tops reach almost 60,000 feet and -80C. They don't "refreeze and go away." Any exhaust has more water than what comes into the intake, so it makes "clouds."
But you can believe what you want. At least you're reading something, whatever that may be. Like I always say - I don't fear the illuminati, I fear the illiterati.
Thunderstorm clouds that reach altitudes higher than 30,000 feet carry much more moisture than cloudless sky. Clouds at that level don't have to refreeze because they are already frozen. They contain ice crystals or snow.
When a plane flies through cloudless skies the vapor trail should refreeze fairly quickly at -30 to -70 degrees. That always happened up until about a decade ago. Environmental scientists David Keith said our government has known about climate change since the 1950s.