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downdraft    音标拼音: [d'ɑʊndr,æft]

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  • Updraft and downdraft | Air Movement, Atmospheric Pressure . . .
    In a mature storm, updrafts are present alongside downdrafts caused by cooling and by falling precipitation These downdrafts, originating at high levels, contain cold, dense air that spreads out at the ground as a cold air wedge
  • Vertical draft - Wikipedia
    Vertical drafts, known as updrafts or downdrafts, are localized regions of warm or cool air that move vertically A mass of warm air will typically be less dense than the surrounding region, and so will rise until it reaches air that is either warmer or less dense than itself
  • DOWNDRAFT Definition Meaning - Merriam-Webster
    The meaning of DOWNDRAFT is a downward current of gas (such as air during a thunderstorm) How to use downdraft in a sentence
  • Downdraft | meteorology | Britannica
    downdraft, in meteorology, upward-moving and downward-moving air currents, respectively, that are due to several causes Local daytime heating of the ground causes surface air to become much warmer than the air above, and, because warmer air is less dense, it rises and is replaced by…
  • Thunderstorm - Updrafts, Downdrafts, Air Masses | Britannica
    Thunderstorm downdrafts originate at altitudes where the air temperature is cooler than at ground level, and they are kept cool even as they sink to warmer levels by the evaporation of water and melting of ice particles
  • Home • DownDraft. com
    DOWNDRAFT COM offers a full line of DUST, SMOKE, FUME ODOR collection equipment to the industrial manufacturing community Improve workplace air quality with our full line of downdraft tables and booths, fume extractors, mist and dust collectors, air filters and more!
  • Downdraft - NOAAs National Weather Service - Glossary
    Downdraft (Abbrev DWNDFT) - A small-scale column of air that rapidly sinks toward the ground, usually accompanied by precipitation as in a shower or thunderstorm
  • What is a Downdraft Storm? Understanding Its Causes and . . .
    A downdraft is a downward-moving current of air within a thunderstorm that can lead to a sudden and powerful blast of wind known as a downburst These events can significantly affect weather patterns and pose risks to both life and property
  • Updrafts and Downdrafts - NASA
    Downdrafts occur on the downwind side of a hill or mountain Downdrafts are often found in the vicinity of strong thunderstorms A micro-burst is a highly localized downdraft of air Micro-bursts near airports have been blamed for airplane crashes in recent years
  • Downdraft - Spragues Backhoe
    A downdraft is a strong, downward-moving current of air that occurs during severe weather events, particularly in thunderstorms This phenomenon can cause rapid changes in wind speed and direction, posing risks to structures, vehicles, and individuals in its path





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