NOCTILUCENT CLOUD


Meaning of NOCTILUCENT CLOUD in English

A cloud that forms in one of the ionized layers of the ionosphere at about 80 kilometers above the Earth's surface, recently renamed polar mesospheric clouds. Noctilucent clouds look similar to cirrus clouds. They can only be seen at high latitudes, usually in the summer when the Sun is below the horizon.

Weather and meteorology English vocabulary.      Английский словарь погоды и метеорологии .