Comparison of Wind-Profiler and Radiosonde Measurements in the Tropics

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  • 1 Bureau of Meteorology Research Centre, Melbourne, Victoria, Australia
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Abstract

The performance and limitations of the Bureau of Meteorology Research Centre's (BMRC) 50-MHz wind profiler operating at Saipan in the central western Pacific are assessed. Hourly averaged profiler estimates of horizontal wind are compared with 120 radiosonde ascents. This comparison shows the best agreement of any large profiler-sonde comparison published with rms differences of about 1.5 m s−3 at some altitudes and about 2.3 m s−1 for all altitudes below 10 km. The results appear to be almost independent of wind-speed or precipitation conditions.

Abstract

The performance and limitations of the Bureau of Meteorology Research Centre's (BMRC) 50-MHz wind profiler operating at Saipan in the central western Pacific are assessed. Hourly averaged profiler estimates of horizontal wind are compared with 120 radiosonde ascents. This comparison shows the best agreement of any large profiler-sonde comparison published with rms differences of about 1.5 m s−3 at some altitudes and about 2.3 m s−1 for all altitudes below 10 km. The results appear to be almost independent of wind-speed or precipitation conditions.

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