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http://dx.doi.org/10.14191/Atmos.2011.21.3.285

Elimination of Chaff Echoes in Reflectivity Composite from an Operational Weather Radar Network using Infrared Satellite Data  

Han, Hye-Young (Weather Radar Center, Korea Meteorological Administration)
Heo, Bok-Haeng (Weather Radar Center, Korea Meteorological Administration)
Jung, Sung-Hwa (Department of Astronomy and Atmospheric Sciences, Kyungpook National University)
Lee, GyuWon (Department of Astronomy and Atmospheric Sciences, Kyungpook National University)
You, Cheol-Hwan (Weather Radar Center, Korea Meteorological Administration)
Lee, Jong-Ho (Weather Radar Center, Korea Meteorological Administration)
Publication Information
Atmosphere / v.21, no.3, 2011 , pp. 285-300 More about this Journal
Abstract
To discriminate and eliminate chaff echoes in radar measurements, a new removal algorithm in two-dimensional reflectivity composite at the height of 1.5 km has been developed by using the brightness temperature($T_B$) obtained from MTSAT-1R. This algorithm utilizes the fact that chaffs are not appeared in infrared satellite data of MTSAT-1R, but detected in radar measurements due to their significant backscattering in the given radar wavelength. The algorithm is evaluated for three different situations: chaff only, chaff mixed with convective storms, and chaff covered with clouds. The algorithm shows excellent performance for the cases of chaff only and chaff mixed with convective storms. However, the performance of the algorithm significantly depends on the presence of clouds. Thus, the statistical analysis of $T_B$ is performed in order to optimize the monthly threshold.
Keywords
chaff echoes; weather radar; TSAT-1R; uality control; radar composite;
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Times Cited By KSCI : 1  (Citation Analysis)
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