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- L’expérience NIMROD (Northern Illinois Meteorological Research On Downburst) était une étude météorologique in situ des orages violents et de leurs vents dommageables. Elle a été réalisée dans l’aire métropolitaine de Chicago, Illinois, États-Unis, du 15 mai au 30 juin 1978. Les données recueillies provenaient autant d'orages unicellulaires que de systèmes convectifs de méso-échelle, tels que des grains d'arc. L'expérience utilisa des radars météorologiques Doppler pour étudier les mésocyclones, les rafales descendantes et les fronts de rafales en corrélation avec des observations au sol. Elle a permis pour la première fois la détection en temps réel des micro-rafales, des vents violents très localisés sous un orage, ce qui a mené à l'amélioration de la sécurité aérienne et du public par l'implantation de systèmes comme le radar météorologique Doppler d'aéroport et le système d’alerte de cisaillement du vent à basse altitude. (fr)
- Project NIMROD (Northern Illinois Meteorological Research On Downburst) was a meteorological field study of severe thunderstorms and their damaging winds conducted by the National Center for Atmospheric Research (NCAR). It took place in the Greater Chicago area from May 15 to June 30, 1978. Data collected was from single cell thunderstorms as well as mesoscale convective systems, such as bow echoes. Using Doppler weather radars and damage clues on the ground, the team studied mesocyclones, downbursts and gust fronts. NIMROD was the first time that microbursts, very localized strong downdrafts under thunderstorms, were detected; this helped improve airport and public safety by the development of systems like the Terminal Doppler Weather Radar and the Low-level windshear alert system. (en)
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- 9840 (xsd:nonNegativeInteger)
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- Northern Illinois Meteorological Research On Downburst (en)
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- 0001-05-15 (xsd:gMonthDay)
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- Danger to aviation by microbursts. (en)
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- National Center for Atmospheric Research and University of Chicago under the direction of Ted Fujita and Ramesh Srivastava (en)
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- Documented downbursts, microbursts and other severe wind events with thunderstorms. (en)
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- Project NIMROD (Northern Illinois Meteorological Research On Downburst) was a meteorological field study of severe thunderstorms and their damaging winds conducted by the National Center for Atmospheric Research (NCAR). It took place in the Greater Chicago area from May 15 to June 30, 1978. Data collected was from single cell thunderstorms as well as mesoscale convective systems, such as bow echoes. Using Doppler weather radars and damage clues on the ground, the team studied mesocyclones, downbursts and gust fronts. NIMROD was the first time that microbursts, very localized strong downdrafts under thunderstorms, were detected; this helped improve airport and public safety by the development of systems like the Terminal Doppler Weather Radar and the Low-level windshear alert system. (en)
- L’expérience NIMROD (Northern Illinois Meteorological Research On Downburst) était une étude météorologique in situ des orages violents et de leurs vents dommageables. Elle a été réalisée dans l’aire métropolitaine de Chicago, Illinois, États-Unis, du 15 mai au 30 juin 1978. Les données recueillies provenaient autant d'orages unicellulaires que de systèmes convectifs de méso-échelle, tels que des grains d'arc. (fr)
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- Expérience NIMROD (fr)
- Project NIMROD (en)
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