transient luminous event

(astronomy, meteorology, aviation) Any of a variety of upper atmospheric optical phenomena associated with thunderstorms.

Japanese Meaning

雷雨に伴う上層大気で発生する一時的な発光現象 / 雷雲付近で生じる短時間の光現象

During last night's thunderstorm, the pilot reported spotting a faint transient luminous event above the anvil cloud.

昨夜の雷雨の間、パイロットは積乱雲の雲頂上空でかすかな一過性発光現象を目撃したと報告した。

Sense（1）

(astronomy, meteorology, aviation) Any of a variety of upper atmospheric optical phenomena associated with thunderstorms.

Transient luminous events can be another source of ionization in the upper atmosphere.

transient luminous events

（ plural ）