| 单词 | polar stratospheric cloud |
| 释义 | polar stratospheric cloud[ poh-ler strat-uh-sfer-ik kloud, ‐sfeer‐ ] / ˈpoʊ lər ˌstræt əˈsfɛr ɪk ˈklaʊd, ‐ˈsfɪər‐ / noun Meteorology.an iridescent cloud in the winter polar stratosphere, as high as 15.5 miles (25 kilometers) above the earth: in both the Antarctic and the Arctic, these clouds contribute to ozone depletion by converting benign forms of chlorine into ozone-destroying forms and by eliminating the nitrogen compounds that curb the destructive effects of chlorine. Abbreviation: PSC Also called moth·er-of-pearl cloud, [muhth-er-uhv-purl-kloud] /ˈmʌð ər əvˈpɜrl ˈklaʊd/ na·cre·ous cloud [ney-kree-uhs kloud] /ˈneɪ kri əs ˈklaʊd/ . Origin of polar stratospheric cloudFirst recorded in 1980–85 Words nearby polar stratospheric cloudpolar orbit, polar outbreak, Polar Regions, polar sequence, polar star, polar stratospheric cloud, polar vortex, polar wander, Polatsk, polder, pole Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 |
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