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Why I can't see aeroplanes leaving a white trail now?

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The contrails are visible in specific meteorological conditions. These conditions are more pronounced during monsoons when moisture is high. The met forecast - particularly at Air Force stations - includes mintra level and drytra level. read more

You can’t tell how high a plane is. And you certainly can’t tell if one plane is at the same altitude as another. These planes fly at 30,000 to 40,000 feet. Let’s see what the visual difference is at around that altitude: I took one image of a jet nominally at 35,000 feet. Then scaled it for 34,000 (102.9%) and 32,000 feet (109.4%). read more

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