Rain Attenuation Correction of Reflectivity for X-Band Dual-Polarization Radar

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Abstract
In order to improve the performance of X-band dual-polarization radars, it is necessary to conduct attenuation correction before using the X-band radar data. This study analyzes a variety of attenuation correction methods for the X-band radar reflectivity, and proposes a high-resolution slide self-consistency correction (SSCC) method, which is an improvement of Kim et al.’s method based on Bringi et al.’s original method. The new method is comprehensively evaluated with the observational data of convective cloud, stratiform cloud, and the stratiform cloud with embedded convection. Comparing with the intrinsic reflectivity at X-band calculated from the reflectivity at S-band, it is found that the new method can effectively reduce the correction errors when calculating differential propagation shift increments using the conventional self-consistency attenuation correction method. This method can efficiently correct the X-band dual-polarization radar reflectivity, in particular, for the echoes with reflectivity greater than 35 dBZ.
Funding Information
  • National Key Basic Research 973 Program of China (Grant Nos. 2014CB441403, Grant Nos. 2013CB430105)
  • National Natural Science Foundation of China (Grant Nos. 41605019, Grant Nos. 41575037)
  • China Postdoctoral Science Foundation (Grant Nos. 2015M580123)

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