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http://dx.doi.org/10.7780/kjrs.2018.34.2.1.8

Comparison of Wind Profiler Wind Measurements with Rawinsonde Data at Bukgangneung  

Kwon, Ju-Hyeong (Department of Atmospheric and Environmental Sciences, Gangneung-Wonju National University)
Kwon, Tae-Yong (Department of Atmospheric and Environmental Sciences, Gangneung-Wonju National University)
Publication Information
Korean Journal of Remote Sensing / v.34, no.2_1, 2018 , pp. 249-265 More about this Journal
Abstract
The Korea Meteorological Administration has been operating wind profiler at 9 stations since the year of 2007. Among these stations, Bukgangneung is the only one that produces regularly both rawinsonde and wind profiler wind measurements at the same time. In this study, wind profiler measurements were compared with rawinsonde wind at Bukgangneung. Unlike most other studies which have used the temporal measurements for several days in summer season, in this study the routine rawinsonde measurments during almost one year (2016) were employed for the accuracy test of the wind. The monthly mean maximum observation height in Bukgangneung shows a large seasonal variation; it was relatively high in summer (4,310 m in July) and low in winter (2,130 m in December). The vertical observation rates at the altitude above these heights were less than 50%. The monthly and vertical wind comparison between rawinsonde and wind profiler shows that absolute bias and RMSE of zonal and meridional wind velocity are mostly less than 1 m/s and less than 2 m/s, respectively. In winter season the RMSE of wind velocity increased to 2~3 m/s. However, at some high altitudes and certain months, large errors were found. It is shown that these errors were related with very weak wind (less than 1 m/s) of wind profiler at 3,500~4,000 m from January to May and dramatic changes of wind the height of 1,500~2,500 m for in April. For Snow events the errors were lower than those for the winter season and for the heavy rain events the errors increased to 3~4 m/s at the height of 4~5 km.
Keywords
Bukgangneung; Wind profiler; Rawinsonde; Comparison; Zonal and meridional wind velocity;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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