Meteorology Group 4

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Meteorology Group 4
2011-12-15 18:54:37
Meteorology Group

weather terms
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  1. hook echo
    classical hallmarks of tornado-producing supercell thunderstorms as seen on a weather radar
  2. knot
    approximately 1.151 mph
  3. downdraft
    A downward current or draft of air
  4. jet stream
    A narrow, variable band of very strong, predominantly westerly air currents encircling the globe several miles above the earth.
  5. gust front
    storm-scale or mesoscale boundary separating thunderstorm-cooled air
  6. drought
    period of abnormally low precipitation; a shortage of water resulting from this
  7. meteorologist
    specialist who studies processes in the earth's atmosphere that cause weather conditions.
  8. gale
    A wind of force 7 to 10 on the Beaufort scale (28–55 knots or 32–63 mph).
  9. hydrology
    The scientific study of the properties, distribution, and effects of water on the earth and in atmosphere
  10. El Nino
    a warm ocean current that flows along the equator from the date line and south off the coast of Ecuador at Christmas time
  11. La Nina
    A cooling of the surface water of the eastern and central Pacific Ocean, occurring somewhat less frequently than El Niño events but causing similar, generally opposite disruptions to global weather patterns
  12. freshet
    The flood of a river from heavy rain or melted snow
  13. halo
    variety of bright circles or arcs centered on the sun or moon, caused by the refraction or reflection of light by ice crystals suspended in the air
  14. hygrometer
    An instrument for measuring the humidity of the air or a gas
  15. evaporation
    process of becoming a vapor
  16. heat island
    metropolitan area which is significantly warmer than its surrounding rural areas
  17. isobar
    A line on a map connecting points having the same atmospheric pressure at a given time or on average over a given period
  18. fahrenheit
    a scale of temperature
  19. lapse rate
    The rate at which air temperature falls with increasing altitude.
  20. muggy
    Unpleasantly warm and humid
  21. graupel
    small hail
  22. NOAA
    National Oceanic and Atmospheric Administration
  23. millibar
    Atmospheric air pressure is often given in millibars
  24. NHC
    National Hurricane Center
  25. monsoon
    seasonal prevailing wind in the region of the Indian subcontinent and Southeast Asia
  26. white out
    lose daylight visibility in heavy fog, snow, or rain
  27. wind aloft
    wind speeds and directions at various levels in the atmosphere
  28. wind chill
    the felt air temperature on exposed skin due to wind