一、晴空湍流及其形成航空气象学中的晴空湍流通常是指出现在6000m以上高空与对流无关的湍流,但不排斥与其他云(主要指卷云)有关的湍流。飞机在睛空湍流区飞行时发生的颠簸称为晴空颠簸(CAT)。关于晴空湍流的形成,目前人们公认的是切变不稳定理论。这种理论认为,在层结稳定的大 1. Clear sky turbulence and its formation Clear sky turbulence in aeronautical meteorology generally refers to turbulence that occurs unrelated to convection at altitudes above 6000 m, but does not exclude turbulence associated with other clouds (mainly cirrus). The turbulence that occurs when the aircraft is flying in turbulent turbulence is called sky-bumpy (CAT). About the formation of clear sky turbulence, what people recognize now is the theory of shear instability. This theory holds that the stratum is stable and large