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词汇 Storm detection
分类 英语词汇 英语翻译词典
释义

Storm detection

英语百科

Convective storm detection

1960s radar technology (WSR-57) displaying supercells over Minneapolis – Saint Paul during the 1965 Twin Cities tornado outbreak
A rotating wall cloud with rear flank downdraft clear slot evident to its left rear.
Doppler NEXRAD radar image of two mesocyclones with one supercell passing over Northern Michigan on July 3rd, 1999 at 23:41 UTC. Rotations is seen as small couplets of red (away) and green (toward) radial velocities. The thick circles represents 3D vortices which have been classified as mesocyclones near the ground by a detection algorithm. The left mesocyclone is associated with a tornado while to the right a larger area of rotation has developed.
A classic hook echo. The tornado associated with this echo was part of the 1999 Oklahoma tornado outbreak. It reached F5 strength on the Fujita scale.

Convective storm detection is the meteorological observation of deep, moist convection (DMC) and consists of detection, monitoring, and short-term prediction. This term includes the minority of storms which do not produce lightning and thunder. Convective storms can produce tornadoes as well as large hail, strong winds, and heavy rain leading to flash flooding. The detection of convective storms relies on direct eyewitness observations, for example from storm spotters; and on remote sensing, especially weather radar. Some in situ measurements are used for direct detection as well, notably, wind speed reports from surface observation stations. It is part of the integrated warning system, consisting of prediction, detection, and dissemination of information on severe weather to users such as emergency management, storm spotters and chasers, the media, and the general public.

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