| 单词 | planetary wave |
| 释义 | > as lemmasplanetary wave planetary wave n. Meteorology a westward-moving undulation of air with a wavelength of thousands of kilometres, which forms in the troposphere and propagates into the stratosphere, transporting heat towards the poles and affecting the formation and distribution of ozone holes; cf. Rossby wave n. at Rossby n. 2. ΚΠ 1951 J. Namias in T. F. Malone Compend. Meteorol. 803 The speed of propagation of planetary wave energy from one system to another often takes place at a rate appreciably greater than the actual speed of the air particles in any observable atmospheric layer. 2002 New Scientist 26 Oct. 89/4 The continents of the northern hemisphere drive quasi-stationary ‘planetary waves’ in the atmosphere. < as lemmas |
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