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Columbia Encyclopedia entry: meteorology
Meteorology, branch of science that deals with the atmosphere of a planet, particularly that of the earth, the most important application of which is the analysis and prediction of weather. Individual studies within meteorology include aeronomy, the study of the physics of the upper atmosphere; aerology, the study of free air not adjacent to the earth's surface; applied meteorology, the application of weather data for specific practical problems; dynamic meteorology, the study of atmospheric motions (which also includes the meteorology of other planets and satellites in the solar system); and physical meteorology, which focuses on the physical properties of the atmosphere.Development of Meteorology

Aristotle's Meteorologica (c.340 B.C.) is the oldest comprehensive treatise on meteorological subjects. Although most of the discussion is inaccurate in the light of modern understanding, Aristotle's work was respected as the authority in meteorology for some 2,000 years. In addition to further commentary on the Meteorologica, this period also saw attempts to forecast the weather according to astrological events, using techniques introduced by Ptolemy.

As speculation gave way to experimentation following the scientific revolution, advances in the physical sciences made contributions to meteorology, most notably through the invention of instruments for measuring atmospheric conditions, e.g., Leonardo da Vinci's wind vane (1500), Galileo's thermometer (c.1593), and Torricelli's mercury barometer (1643). Further developments included Halley's account of the trade winds and monsoons (1686) and Ferrel's theory of the general circulation of the atmosphere (1856). The invention of the telegraph made possible the rapid collection of nearly simultaneous weather observations for large continental and marine regions, thus providing a view of the large-scale pressure and circulation patterns that determine the weather.

Modern Meteorological Science and Technology

In 1917 the Norwegian physicist Vilhelm Bjerknes introduced his theory describing the formation of wave cyclones on the polar front and laid the foundation for modern methods of weather forecasting. In 1922, L. F. Richardson perceived the basis for the mathematical prediction of the atmospheric circulation, and in 1938 C. G. Rossby made additional mathematical contributions. Application of this treatment by Richardson and Rossby awaited the introduction of high-speed electronic computers, which were first used for weather forecasting in the late 1940s by J. G. Charney and John Von Neumann. By 1955 computer forecasts were being made operationally and computer forecasting models have been improved steadily since then.

Since 1959 meteorological satellites have provided an overview of the atmosphere's cloud patterns, serving among other things as an early warning and detection system for hurricanes, typhoons, and tropical cyclones. Infrared sensors mounted on meteorological satellites now provide observations of the vertical temperature structure of the atmosphere, and research efforts continue the development of computer forecasting models capable of utilizing these and other satellite data to improve current weather-predicting skills. Meteorological studies have been aided by the use of large computers for atmospheric modeling. Information gathered by weather balloons and earth-orbiting satellites have been used in computer models to predict long-term and short-term meteorological events such as changes in ozone levels and daily movements of storms, respectively.

The National Oceanic and Atmospheric Administration (NOAA) has the major governmental responsibility in the United States for monitoring and forecasting the weather and conducting meteorological research. The Air Weather Service and the Fleet Numerical Weather Control have similar responsibilities within the U.S. Air Force and U.S. Navy, respectively; space applications to meteorology are researched by the National Aeronautics and Space Administration (NASA) as well as by the National Environmental Satellite Service, which is under the auspices of NOAA. In addition to a host of universities conducting meteorological research, there is the National Center for Atmospheric Research, which is operated by an affiliation of universities and sponsored by the U.S. National Science Foundation. The World Weather Watch, organized by the World Meteorological Organization, collects and disseminates information on a global basis. A number of private companies also engage in operational and research meteorological activities.

Bibliography

See C. D. Ahrens, Meteorology Today (1988); J. M. Moran, Meteorology (1991).

Wikipedia search results for: Meteorology
From Wikipedia, the free encyclopedia
Meteorology is the interdisciplinary scientific study of the atmosphere that focuses on weather processes and forecasting. Studies in the field stretch back millennia, though significant progress in meteorology did not occur until the eighteenth century. The nineteenth century saw breakthroughs occur after observing networks developed across several countries. Breakthroughs in weather forecasting were achieved in the latter half of the twentieth century, after the development of the computer. Meteorological phenomena are observable weather events which illuminate and are explained by the science of meteorology. Those events are bound by the...more »
Columbia Encyclopedia search results: meteorology
Results 1 - 10  of 91
  • precipitation, in meteorology

    Precipitation, in meteorology, condensed moisture that falls to the surface of the earth in the form of rain, sleet, snow, hail, frost, or dew.

  • nimbus, in meteorology

    Nimbus, in meteorology, low, dark, formless cloud covering the entire sky, from which rain or snow is steadily falling. The term is usually applied to any cloud from which rain descends. Modif...

  • halo, in meteorology

    Halo, in meteorology, short-lived circles or arcs, and less commonly spikes and crosses, of colored or whitish light surrounding the moon or sun or in clouds as seen from above. A halo occurs ...

  • hail, in meteorology

    Hail, precipitation in the form of pellets composed of ice or of ice and snow, occurring at any time of the year, usually during the passage of a cold front or during a thunderstorm. Small hai...

  • World Meteorological Organization

    World Meteorological Organization (WMO), specialized agency of the United Nations; established in 1951 with headquarters at Geneva. It replaced the International Meteorological Organization, w...

  • Glaisher, James

    Glaisher, James, 1809–1903, English meteorologist and balloonist, b. London. He served as superintendent of the department of meteorology and magnetism at Greenwich Observatory from 1838 to 18...

  • Buys Ballot, Christoph Heinrich Diedrich

    Buys Ballot, Christoph Heinrich Diedrich, 1817–90, Dutch meteorologist. Director of the Dutch Royal Meteorological Institute after 1854, he strove to organize and standardize a system for repr...

  • rocketsonde

    Rocketsonde, rocket with instrumentation capable of measuring and transmitting meteorological data to altitudes of 250,000 ft (76,200 m). See radiosonde.

  • Resolution Island

    Resolution Island, 387 sq mi (1,002 sq km), off SE Baffin Island, Canada, Nunavut Territory, at the east entrance of Hudson Strait. At its southern extremity is a radar and meteorological stat...

  • radiosonde

    Radiosonde, group of instruments for simultaneous measurement and radio transmission of meteorological data, including temperature, pressure, and humidity of the atmosphere. The instrument pac...

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