Relationship between radar reflectivity factor and ice water content of non-spherical cirrus ice crystals at 220 GHz

1.Xidian University;2.Science and Technology on Electromagnetic Scattering Laboratory

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National Natural Science Foundation of China, Natural Science Foundation of Shanghai Natural Science Basic Research Program of Shaanxi

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    For the practical needs in the data processing of terahertz radar,the discrete dipole approximation method is used to calculate the backscattering cross-section of non-spherical ice crystals with different shapes. Based on the latest refined ice cloud model, the relationship between the radar reflectivity factor Zm and ice water content I in 220 GHz is established. The calculation results show that both the shape of the non-spherical ice crystals and the ice cloud model have a particular influence on the Zm-I relationship. This study has application value for cloud parameter inversion of mid-latitude cirrus clouds, and it can be helpful for the development of terahertz radar in the detection of clouds.

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  • Received:September 29,2021
  • Revised:November 21,2021
  • Adopted:November 23,2021
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