Meteor Observations Near the Arctic Circle

Details Meteor Observations Near the Arctic Circle Meteor Observations Near the Arctic Circle

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsa41a..07s&link_type=abstract

American Geophysical Union, Fall Meeting 2003, abstract #SA41A-07

Physics

0340 Middle Atmosphere: Composition And Chemistry, 2129 Interplanetary Dust, 6205 Asteroids And Meteoroids, 6215 Extraterrestrial Materials, 6245 Meteors

Scientific paper

Since October 2001, we operate a Skiymet meteor radar at the ALOMAR site (69° N latitude) close to the Arctic circle. The gain pattern of the antenna covers a broad range in elevation angles and is almost independent of the azimuth. Due to its location, the axis of the radar antenna sweeps through the ecliptic North pole once a day throughout the year. In this geometry, it thus records meteor entry trajectories from a very large portion of the ecliptic Northern hemisphere. We report on the annual variation and altitude dependence of the observed meteor rate while the radar field-of-view is centered on the North ecliptic pole. The maximum meteor rate is reached in June, while the minimum (in January) is almost a factor three less. Independent of this special look direction, we have also report on the observed diurnal variation of the meteor rate throughout all seasons.

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