Vertical wind measurements are presented of an atmospheric thermal in which ospreys (Pandion haliaetus) were soaring. These observations were made with a Doppler lidar, allowing high spatial and high temporal resolution wind profiles in clear air. The thermal was generated at the onset of a cloud bank, producing a rolling eddy upon which ospreys were seen to be riding. A determination is made on the size and shape of the thermal, wind speeds involved, and the altitude to which the birds could have ridden the thermal.


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    Title :

    Doppler Lidar Observations of an Atmospheric Thermal Providing Lift to Soaring Ospreys


    Contributors:

    Publication date :

    2005-01-01


    Type of media :

    Preprint


    Type of material :

    No indication


    Language :

    English




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