World map presentation of water vapour perturbation emitted by hypersonic aircraft at 32-38 km altitude

World map presentation of water vapour perturbation by hypersonic aircraft in a layer at 32-38 km altitude. In this movie emitted water vapour accumulates for one month in one-hour steps (interpolated from data with five-hour time intervals for a more fluid film). Transport of perturbation dominated by horizontal movement through atmospheric air mass is visible.