Diurnal variation of overdense meteor echo duration and ozone

Details Diurnal variation of overdense meteor echo duration and ozone Diurnal variation of overdense meteor echo duration and ozone

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992acm..proc..557s&link_type=abstract

In Lunar and Planetary Inst., Asteroids, Comets, Meteors 1991 p 557-560 (SEE N93-19113 06-90)

Physics

1

Atmospheric Ionization, Diurnal Variations, Meteoroid Showers, Radar Echoes, Radio Meteors, Free Electrons, Ozone, Solar Radiation, Sunrise

Scientific paper

The diurnal variation of the median duration of overdense sporadic radar meteor echoes is examined. The meteors recorded in August, December, and January by the Ondrejov meteor radar during the period 1958-1990 were used for the analysis. A maximum median echo duration 1-3 hours after the time of local sunrise in the meteor region confirms the already known sunrise effect. Minimum echo duration occurring at the time of sunset seems to be the most important point of diurnal variation of the echo duration, when ozone is no longer dissociated by solar UV radiation. The effect of diurnal changes of the echo duration should be considered when the mass distribution of meteor showers is analyzed.

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