Construct · 1 fields · 1 citations

downburst: a standalone construct

One name. One construct. A landmark on the map.

● anchor · a single construct in one field Nearest construct by meaning·not indexed
downburst1 CONSTRUCTDownburstFUJITA & BYERS · 1977

A single standalone construct; nearby constructs are located against it in the Collider. Tap a field for its definition, unit, and measures.

Meteorology

A column of air that slams down and bursts outward

A downburst is a strong, concentrated downdraft from a convective cloud that strikes the ground and spreads out as a burst of damaging, diverging winds, which can flatten crops and forests in a radial or straight-line pattern and is a severe hazard to aircraft on takeoff and landing. Fujita and Byers's 1977 Spearhead echo and downburst in the crash of an airliner introduced the concept while diagnosing an aviation accident, and Fujita later split it by footprint into the small microburst and the larger macroburst. The referent is a descending, then outrushing, air current defined by its surface divergence, and it is measured by peak outflow wind and the velocity difference across the outflow rather than by rotation.[1]

Unit
The peak outflow wind speed and the velocity difference across the diverging burst
Recovery means
Not applicable
Measured by
Detected by low-level wind divergence and differential Doppler radial velocity, and inferred from the divergent (starburst) pattern of surface damage

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Nearby constructs

haboob1 fields · 1 citationsanchor · a single construct in one fieldaccident3 fields · 4 citationsjingle · one word, three constructscloud4 fields · 5 citationsjingle · one word, four constructs

References

  1. Fujita, T. T., & Byers, H. R. (1977). Spearhead echo and downburst in the crash of an airliner. Monthly Weather Review, 105(2), 129–146. https://doi.org/10.1175/1520-0493(1977)105<0129:SEADIT>2.0.CO;2

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