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    Airborne Doppler Lidar Observations of Convective Phenomena in Oklahoma

    Source: Journal of Atmospheric and Oceanic Technology:;1987:;volume( 004 ):;issue: 003::page 479
    Author:
    McCaul, Eugene W.
    ,
    Bluestein, Howard B.
    ,
    Doviak, Richard J.
    DOI: 10.1175/1520-0426(1987)004<0479:ADLOOC>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: On 30 June 1981, the wind fields around a variety of convective clouds, ranging from large thunderstorm complexes to isolated cumulus congestus, were observed in Oklahoma using an airborne Doppler lidar operated by the National Aeronautics and Space Administration (NASA). By steering the pulsed infrared laser beam alternately along differing horizontal directions, a network of independent radial velocity measurements is obtained, which permits high-resolution synthesis of the full horizontal wind vector field in a swath adjacent to the aircraft flight track. The bright reflections of the laser signal by cloud surfaces permit direct identification of the locus of cloud edges, information which is prerequisite to detailed study of the relationships between the winds inside and outside clouds. The horizontal wind fields derived from the lidar data reveal waves and vortices along the gust front of a storm which eventually produced a gust-front tornado, and cloud-scale convergence patterns around an isolated cumulus congestus. Despite the presence of some questionable data associated with undersampling and delayed recording of certain aircraft motion parameters, most of the lidar results appear consistent with cloud photographs made during the experiment, with surface meteorological data, with aircraft flight-level wind data, and with previous observational and theoretical work.
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      Airborne Doppler Lidar Observations of Convective Phenomena in Oklahoma

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4168512
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    contributor authorMcCaul, Eugene W.
    contributor authorBluestein, Howard B.
    contributor authorDoviak, Richard J.
    date accessioned2017-06-09T14:58:34Z
    date available2017-06-09T14:58:34Z
    date copyright1987/09/01
    date issued1987
    identifier issn0739-0572
    identifier otherams-311.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4168512
    description abstractOn 30 June 1981, the wind fields around a variety of convective clouds, ranging from large thunderstorm complexes to isolated cumulus congestus, were observed in Oklahoma using an airborne Doppler lidar operated by the National Aeronautics and Space Administration (NASA). By steering the pulsed infrared laser beam alternately along differing horizontal directions, a network of independent radial velocity measurements is obtained, which permits high-resolution synthesis of the full horizontal wind vector field in a swath adjacent to the aircraft flight track. The bright reflections of the laser signal by cloud surfaces permit direct identification of the locus of cloud edges, information which is prerequisite to detailed study of the relationships between the winds inside and outside clouds. The horizontal wind fields derived from the lidar data reveal waves and vortices along the gust front of a storm which eventually produced a gust-front tornado, and cloud-scale convergence patterns around an isolated cumulus congestus. Despite the presence of some questionable data associated with undersampling and delayed recording of certain aircraft motion parameters, most of the lidar results appear consistent with cloud photographs made during the experiment, with surface meteorological data, with aircraft flight-level wind data, and with previous observational and theoretical work.
    publisherAmerican Meteorological Society
    titleAirborne Doppler Lidar Observations of Convective Phenomena in Oklahoma
    typeJournal Paper
    journal volume4
    journal issue3
    journal titleJournal of Atmospheric and Oceanic Technology
    identifier doi10.1175/1520-0426(1987)004<0479:ADLOOC>2.0.CO;2
    journal fristpage479
    journal lastpage497
    treeJournal of Atmospheric and Oceanic Technology:;1987:;volume( 004 ):;issue: 003
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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