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| Titel |
Comparisons of full correlation analysis (FCA) and imaging Doppler interferometry (IDI) winds using the Buckland Park MF radar |
| VerfasserIn |
D. A. Holdsworth, I. M. Reid |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 22, no. 11 ; Nr. 22, no. 11 (2004-11-29), S.3829-3842 |
| Datensatznummer |
250015053
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| Publikation (Nr.) |
 copernicus.org/angeo-22-3829-2004.pdf |
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| Zusammenfassung |
| We present results from three years of mesospheric and thermospheric wind
measurements obtained using full correlation analysis (FCA) and
imaging Doppler interferometry (IDI) for the Buckland Park MF
radar. The IDI winds show excellent agreement with the
FCA winds, both for short (2-min) and longer term (hourly,
fortnightly) comparisons. An extension to a commonly used statistical
analysis technique is introduced to show that the IDI winds are approximately
10% larger than the FCA winds, which we attribute to an underestimation
of the FCA winds rather than an indication that IDI overestimates the wind
velocity. Although the distribution of IDI effective scattering positions
are shown to be consistent with volume scatter predictions, the velocity
comparisons contradict volume scatter predictions that the IDI velocity
will be overestimated. However, reanalysis of a 14-day data set suggests the
lack of overestimation is due to the radial velocity threshold used in the analysis,
and that removal of this threshold produces the volume scatter predicted
overestimation of the IDI velocities. The merits of using hourly IDI
estimates versus hourly averaged 2-min IDI estimates are presented, suggesting
that hourly estimated turbulent velocities are overestimated. |
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