black plume contrail in western sky over fingerlakes nys

stratosphere mesosphere stratiform cirriform wisps stratocumuliform bands ripples cumuliform cumulonimbiform tropospheric climate etymology nephology marestail meteorology cirrus uncinus windshear undulatus physics cloud cloudscape precipitation icecrystals sky sunset homosphere jet engine soot trail pattern troposphere particles velocity air atmosphere aeronautics aviation contrails chemtrails humidity cold temperatures climate impact co2 emissions cloudiness clouds weather chemical cirrus darklines blackbeams dark darkness shadow soot gasses 35000 water vapor fuel burn bypassratio ice plumes sunlight