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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 12, issue 8
Ann. Geophys., 12, 746–764, 1994
https://doi.org/10.1007/s00585-994-0746-4
© European Geosciences Union 1994
Ann. Geophys., 12, 746–764, 1994
https://doi.org/10.1007/s00585-994-0746-4
© European Geosciences Union 1994

  31 Jul 1994

31 Jul 1994

Field campaign for the comparison of SOUSY radar wind measurements with rawinsonde and model data

H. Steinhagen, A. Christoph, P. Czechowsky, U. Görsdorf, M. Gube-Lenhardt, J. Lippmann, J. Neisser, R. Rüster, G. Schmidt, W. Wergen, and J. G. Yoe H. Steinhagen et al.

Abstract. A field campaign was carried out from 26 October to 7 November 1992, using the SOUSY-VHF radar and a mobile rawinsonde system installed and operated nearby to produce vertical wind profiles. The purpose of this campaign was to compare the two types of wind measurements with one another and with results from forecast models. Numerical algorithms were developed and applied to the radar data in order to eliminate random errors, correct for velocity aliasing, and calculate the effective zenith angle of the off-vertical beams. Differences between wind profiler data and rawinsonde or model results depend not only upon the errors of the different systems, but also on temporal and spatial variations of the wind field. Therefore, methods for the comparison of radar and rawinsonde data were developed which take into consideration these variations. The practical potential of these methods is demonstrated by comparisons of rawinsonde and radar wind profiles. The comparison of radar data and model output shows excellent agreement in the direction and in the speed of the wind at virtually all altitudes. An evaluation of the quality of wind profiler measurements is possible using the estimation of variance and variability of wind components.

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