noun
polar stratospheric cloud
Technical term used in meteorology and atmospheric science. Refers to clouds that form in the winter polar stratosphere at very low temperatures.
極成層圏雲はオゾン層破壊に関係している。
Polar stratospheric clouds are involved in ozone layer depletion.
Compound of 極 (polar), 成層圏 (stratosphere), and 雲 (cloud).