downdraft

Thân thiện

A small airplane encounters a sudden downdraft while flying over the mountains.

Definition

Noun: A strong, localized downward current of air. This meteorological phenomenon typically occurs during thunderstorms or in areas of significant atmospheric instability, where cooler, denser air descends rapidly toward the earth's surface.

Usage

The word "downdraft" is used to describe a specific and powerful downward movement of air. It is a technical term common in meteorology, aviation, and weather reporting. It often implies a force that can impact objects or conditions on the ground.

Examples

• The sudden downdraft from the thunderstorm caused the plane to experience severe turbulence.
• Firefighters were cautious of the dangerous downdraft that could spread the wildfire rapidly.
• A powerful downdraft known as a microburst can pose a serious hazard to aircraft during takeoff and landing.

Advanced Usage

• "Rear-flank downdraft (RFD)": A specific type of downdraft on the back side of a supercell thunderstorm, crucial to the formation of tornadoes.
  • The tornado touched down shortly after the development of the rear-flank downdraft.

Variants and Related Words

• Downdraught (Noun): A chiefly British English spelling variant of "downdraft."
• Downburst (Noun): A particularly intense and damaging downdraft that spreads out horizontally upon hitting the ground.
• Microburst (Noun): A very intense, small-scale downburst.

Synonyms

• Sink (Noun, in meteorological contexts): A mass of downward-moving air.
• Descending current (Noun Phrase): A descriptive term for downward air movement.

Antonyms

• Updraft (Noun): A strong upward current of air.
• Thermal (Noun): A column of rising warm air.

Học thuật

Noun

1. a strong downward air current