YaBeSH Engineering and Technology Library

    • Journals
    • PaperQuest
    • YSE Standards
    • YaBeSH
    • Login
    View Item 
    •   YE&T Library
    • AMS
    • Journal of Applied Meteorology
    • View Item
    •   YE&T Library
    • AMS
    • Journal of Applied Meteorology
    • View Item
    • All Fields
    • Source Title
    • Year
    • Publisher
    • Title
    • Subject
    • Author
    • DOI
    • ISBN
    Advanced Search
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Archive

    Simultaneous Radar, Aircraft and Meteorological Investigations of Clear Air Turbulence

    Source: Journal of Applied Meteorology:;1969:;volume( 008 ):;issue: 004::page 634
    Author:
    Glover, Kenneth M.
    ,
    Boucher, Roland J.
    ,
    Ottersten, Hans
    ,
    Hardy, Kenneth R.
    DOI: 10.1175/1520-0450(1969)008<0634:SRAAMI>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: The results of simultaneous studies of clear air turbulence (CAT) in the lower 15 km of the atmosphere by multi-wavelength radar, jet aircraft and special rawinsondes at the JAFNA radar facility at Wallops Island, Va., are reported. The most important finding is that for the particular aircraft and velocity used in these experiments, every clear air radar echo above 3 km is associated with aircraft reports of at least some perceptible degree of turbulence. Between the altitudes of 3 and 6 km, all CAT is detected by the radars; however, the ability of the radars to detect weak CAT decreases with increasing altitude and only the more intense turbulence is detected above 12 km. The indications are that strong CAT at high altitudes in the free atmosphere is generally associated with zones of increased refractive index variability and enhanced radar backscattering. Therefore, if radars of extreme sensitivity are employed, the useful range for CAT detection may be extended considerably and may possibly satisfy the requirements of an operational ground-based CAT detecting radar system. The vertical vector wind shear appears to be the most significant meteorological factor in specifying turbulent regions. A wind shear criterion ≥ 0.8 ? 10?2 sec?1 applied to rawinsonde data specifies the presence or absence of turbulence correctly in 77% of all cases, including 100% of the cases involving CAT greater than light.
    • Download: (562.7Kb)
    • Show Full MetaData Hide Full MetaData
    • Item Order
    • Go To Publisher
    • Price: 5000 Rial
    • Statistics

      Simultaneous Radar, Aircraft and Meteorological Investigations of Clear Air Turbulence

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4221499
    Collections
    • Journal of Applied Meteorology

    Show full item record

    contributor authorGlover, Kenneth M.
    contributor authorBoucher, Roland J.
    contributor authorOttersten, Hans
    contributor authorHardy, Kenneth R.
    date accessioned2017-06-09T17:03:43Z
    date available2017-06-09T17:03:43Z
    date copyright1969/08/01
    date issued1969
    identifier issn0021-8952
    identifier otherams-7879.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4221499
    description abstractThe results of simultaneous studies of clear air turbulence (CAT) in the lower 15 km of the atmosphere by multi-wavelength radar, jet aircraft and special rawinsondes at the JAFNA radar facility at Wallops Island, Va., are reported. The most important finding is that for the particular aircraft and velocity used in these experiments, every clear air radar echo above 3 km is associated with aircraft reports of at least some perceptible degree of turbulence. Between the altitudes of 3 and 6 km, all CAT is detected by the radars; however, the ability of the radars to detect weak CAT decreases with increasing altitude and only the more intense turbulence is detected above 12 km. The indications are that strong CAT at high altitudes in the free atmosphere is generally associated with zones of increased refractive index variability and enhanced radar backscattering. Therefore, if radars of extreme sensitivity are employed, the useful range for CAT detection may be extended considerably and may possibly satisfy the requirements of an operational ground-based CAT detecting radar system. The vertical vector wind shear appears to be the most significant meteorological factor in specifying turbulent regions. A wind shear criterion ≥ 0.8 ? 10?2 sec?1 applied to rawinsonde data specifies the presence or absence of turbulence correctly in 77% of all cases, including 100% of the cases involving CAT greater than light.
    publisherAmerican Meteorological Society
    titleSimultaneous Radar, Aircraft and Meteorological Investigations of Clear Air Turbulence
    typeJournal Paper
    journal volume8
    journal issue4
    journal titleJournal of Applied Meteorology
    identifier doi10.1175/1520-0450(1969)008<0634:SRAAMI>2.0.CO;2
    journal fristpage634
    journal lastpage640
    treeJournal of Applied Meteorology:;1969:;volume( 008 ):;issue: 004
    contenttypeFulltext
    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian
     
    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian