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5. Conclusion

The analysis results of DWD radars show consistent bias estimates throughout the whole rain event, implying the proposed self-‐consistency method be robust. Although small number of data points might still give good bias estimate, data points> 10000 per sweep are recommended for reliable results. Given the promising results from DWD radars, the propose reflectivity calibration method could be a useful tool for real-‐time data quality control in polarimetric weather radar.