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There is a persistent contrail in the sky, and the middle portion of the contrail has disappeared. Is the disappearance caused by wind or air temperature?

April 26, 2017air caused contrail disappearance Disappeared middle persistent portion sky wind

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There is a persistent contrail in the sky, and the middle portion of the contrail has disappeared. Is the disappearance caused by wind or air temperature?

1 Answer

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For all or part of the contrail to disappear, there is a lack of moisture to maintain formation of the ice crystals. It may be possible for air currents to move drier air into the area of the contrail, which would cause that portion of the contrail to evaporate.