Think of gravity waves as waves moving through stable air. When you look at waves in the ocean, there are high parts and low parts to that wave. Clouds need lift to materialize in the atmosphere.
“Downwind of that, the air continues to oscillate up and down and that's why you see a wave of clouds known as gravitywave clouds continue out all the way into Arizona (on Monday).” Other ...
Aidan Blaser [Opens in a new window], The particle trajectories in irrotational, incompressible and inviscid deep-water surface gravity waves are open, leading to a net drift in the direction of ...