Scattering Calculations at C-Band for Asymmetric Raindrops Reconstructed from 2D Video Disdrometer Measurements
Scattering Calculations at C-Band for Asymmetric Raindrops Reconstructed from 2D Video Disdrometer Measurements
复制标题
根据 2D 视频测距仪测量重建的不对称雨滴的 C 波段散射计算
DOI：
10.1175/jtech-d-16-0141.1
复制
发表时间：
2017
影响因子：
2.2
通讯作者：
B. Notaroš
中科院分区：
文献类型：
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作者：
M. Thurai;Sanja B. Manić;M. Schönhuber;V. Bringi;B. Notaroš
AbstractThe雨滴形状的分布是众所周知的是重要的，在推导出的检索算法的滴大小分布参数（如质量加权平均直径）和降雨率，以及使用差分传播相位约束的衰减校正。虽然过去的工作表明，在绝大多数降雨事件中，最“可能”的形状符合主要由轴对称（2，0）振荡模式产生的形状，但最近的事件分析表明，液滴碰撞可以引起混合模式振荡，并且对于高碰撞率情景，在任何给定的时刻，相当大比例的液滴可以变成“不对称”。作为这些研究的后续，这项研究涉及使用2D视频散射仪（2DVD）的形状测量值对不对称液滴的3D重建形状进行散射计算在上述降雨过程中。一个最近开发的技术，以促进3D重建从2DV…
AbstractThe distribution of raindrop shapes is well known to be important in deriving retrieval algorithms for drop size distribution parameters (such as the mass-weighted mean diameter) and rain rate, as well as for attenuation correction using the differential propagation phase constraint. While past work has shown that in the vast majority of rain events the most “probable” shapes conform to those arising primarily from the axisymmetric (2,0) oscillation mode, a more recent event analysis has shown that drop collisions can give rise to mixed-mode oscillations and that for high collision rate scenarios, a significant percentage of drops can become “asymmetric” at any given instant.As a follow-up to such studies, this study involved performing scattering calculations for 3D-reconstructed shapes of asymmetric drops using the shape measurements from a 2D video disdrometer (2DVD) during the above-mentioned rain event. A recently developed technique is applied to facilitate the 3D reconstruction from the 2DV...