. . "Lee waves." . . "Wind shear." . . "Perturbation." . . "Richardson number." . . "Gravity waves." . . "Atmospheric circulation." . . "Strata." . . "Shear flow." . . . . . . "Perturbations of the Richardson number field by gravity waves final technical report under NASA NSG 4024, May 1, 1979 to December 31, 1984"@en . . . . . . . . . . . .