A new SuperDARN meteor wind measurement: Raw time series analysis method and its application to mesopause region dynamics

Details A new SuperDARN meteor wind measurement: Raw time series analysis method and its application to mesopause region dynamics A new SuperDARN meteor wind measurement: Raw time series analysis method and its application to mesopause region dynamics

Oct 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29t..42y&link_type=abstract

Geophysical Research Letters, Volume 29, Issue 20, pp. 42-1, CiteID 1981, DOI 10.1029/2002GL015210

Physics

8

Radio Science: Radar Atmospheric Physics, Meteorology And Atmospheric Dynamics: Mesospheric Dynamics, Meteorology And Atmospheric Dynamics: Waves And Tides, Radio Science: Signal Processing, Radio Science: Instruments And Techniques

Scientific paper

SuperDARN meteor wind measurements in the mesopause region using the standard analysis of ACFs constructed from the multi-pulse sequence have several shortcomings. To overcome them, we have developed a new method to enable raw time series analysis without degrading normal SuperDARN ACF observations. The unevenly sampled raw time series is processed to detect only underdense meteor echoes to deduce line-of-sight neutral wind velocities and decay time constants. We installed this new code at the SENSU Syowa radar in Antarctica. Distributions of underdense meteor echoes show clear and expected dependency on distance from the radar, local time, and diffusion coefficient. By using diffusion coefficients as height information, we successfully obtained the structure of a downward phase propagating semi-diurnal tide, which has not previously been achieved by analysing normal SuperDARN ACF data.

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