AbstractProfiles of meridional neutral wind velocities in the height range 54–81 km with high temporal (minutes) and spatial resolution (1 km) from the EISCAT Incoherent Scatter Radar (ISR) at 933 MHz are presented. The data, obtained during three different solar proton events causing polar cap absorption (PCA) in 1989–1990, sometimes show slowly descending structures in the velocity profile which may be the signature of waves with vertical wavelengths as low as 10 km and periods from 9–14 hours.


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    Title :

    Observations of atmospheric dynamics in the low- and middle-mesosphere with the EISCAT incoherent scatter radar during solar proton events


    Contributors:

    Published in:

    Publication date :

    1992-01-01


    Size :

    4 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English