upper air

基本解释

It diffused northeastward , which was caused by the upper air winds and geomagnetic field.
受地球重力场和高空风场的影响，该不均匀体向东北方向扩散。
The major systems come from the shear line of low-layer, the low trough of upper air and the ground stationary front.
主要影响系统来自低层切变线、高空低槽和地面静止锋；
Such a bomb, if exploded near the ground or under water, sends radioactive particles into the upper air. They sink gradually and reach the surface of the earth in the form of a deadly dust or rain.
这样一个，假如在近地可能水下爆炸，会将放射性粒子送入高空，它们会逐步下沉，然后以一种致命的尘埃可能雨水的情势抵达地面。

Theory predicts that when cosmic rays (fast particles coming from outer space) collide with air molecules in the upper atmosphere, they should yield twice as many muon neutrinos as electron neutrinos.
ECONOMIST: Neutrinos
By working closely together, aerodynamicists and designers can determine the precise shape of the various bits of the car's body needed to ensure that the air slows down on all upper surfaces but speeds up on the under surfaces.
ECONOMIST: CAR DESIGN