Multiple Contrail Shadows
Imaged by Patrik Trncák at Holesov, Czech Republic. ©Patrik Trncák.
Three shadows darken the cirrus haze above a contrail. A weak ice halo crosses the trail.
The aircraft trail of water droplets and ice crystals is at a greater altitude than three discrete layers of cirrus haze. The trail casts a shadow on each layer.
Ice crystals in at least two of the layers contributed to the halo. The contrail shadows the sun and locally blocks halo formation.