C-Band Polarimetric Radar Studies During CLEOPATRA

先进极化雷达技术在降水遥感中的应用是我们的主要研究方向。一个名为CLEOPATRA（云实验Oberpfaffenhofen和运输）的项目，将由DLR和德国的其他大学和研究机构在今年夏天进行，将提供大量的原位和其他遥感雷达数据，这些数据将验证和增强对新的极化特征的微物理解释，如传播差相，c波段DLR雷达可测量的共极相关系数和后向散射差相位。此外，该项目将有一架由DLR操作的猎鹰喷气机，以及两台垂直指向的多普勒雷达，这对本文提出的研究非常重要。猎鹰飞机将具有箔条释放能力，通过使用雷达去极化特征跟踪箔条来研究夹带。将研究各种夏季对流降水的新极化特征（>DP, >HV, .）的协调雷达/飞机数据集，并将其与飞机2D-PMS图像和垂直指向多普勒数据（如适用）进行比较。基于协方差的偏振变换技术将是“瞬时”散射矩阵方法，该方法已经在进行中，将通过在CLEOPATRA期间收集进一步的时间序列数据进行检查。我们将把我们已经开发的Mueller矩阵模型与DLR数值云模型（MESOSCOP）结合起来，研究模拟风暴运动学和微物理产品的极化特征变化。

The application of advance polarimetric radar techniques to the remote sensing of precipitation is our principal research focus. A project named CLEOPATRA (Cloud Experiment Oberpfaffenhofen and Transports), to be conducted by DLR and other universities and research organizations in Germany this summer, will make available substantial in situ and other remote sensing radar data which will validate and enhance the microphysical interpretation of the new polarimetric signatures such as propagation differential phase, copolar correlation coefficient and backscatter differential phase that can be measured with the C-Band DLR radar. In addition, the project will have available one FALCON jet operated by DLR, and two vertically pointing Doppler radars which will be important for the studies proposed herein. The FALCON aircraft will have a chaff release capability for the study of entrainment by tracking chaff using the radar depolarization signature. Coordinated radar/aircraft datasets in a variety of summer-time convective precipitation of the newer polarimetric signatures (>DP, >HV, .) will be studied and compared with aircraft 2D-PMS images and the vertically pointing Doppler data where applicable. Polarization transformation techniques based on covariance will be "instantaneous" scattering matrix methods which are already in progress will be checked by collecting further time series data during CLEOPATRA. We will couple our already developed Mueller matrix model to the DLR numerical cloud model (MESOSCOP) to study the variation in polarimetric signatures with modelled storm kinematics and microphysics products.