In aviation, what does the term "downdraught" refer to?

The term "downdraught" refers specifically to a downward flowing air current. This phenomenon occurs when cool air descends, often resulting from factors such as cooling in the air mass or winds that push air downwards. Downdraughts can develop in various weather conditions, particularly during thunderstorms, where they can create significant impacts on aircraft during landing and takeoff.

Understanding the nature of downdraughts is essential for pilots as these air currents can affect aircraft performance and stability, leading to turbulence or abrupt altitude changes. Recognizing these patterns helps pilots in making informed decisions while navigating through varying weather conditions.