GPM GROUND VALIDATION PAWNEE RADAR MC3E

The GPM Ground Validation Pawnee Radar MC3E dataset was collected by the Pawnee radar data for the Midlatitude Continental Convective Clouds Experiment (MC3E) held in Oklahoma were collected on May 24, 2011 to support the CHILL radar and the NASA ER-2 instrumentation data. The Pawnee is a single polarization (V polarization) Doppler radar. During the ER2 flight, the Pawnee conducted a wide azimuth opening PPI sector volume scan oriented towards the east designed to provide general 3D coverage of the ER2 flight area. When the ER2 reported starting a course reversal, the CHILL and Pawnee radars attempted to start sector scans at the same time to support dual Doppler wind analyses. In an effort to expand the MC3E sampling to a wider geographical area, the NASA ER2 aircraft was directed to Northeastern Colorado while widespread rain was in progress on May 24, 2011. The aircraft flew a series of pre-defined ground tracks that coincided with radials from the CHILL radar. This aided in keeping the aircraft in the plane of a series of RHI scans done by CHILL. The single polarization Pawnee radar maintained volume coverage of the echo system while the radial flight legs were in progress. During aircraft course reversals at the ends of the radial legs, the CHILL and Pawnee radars started volume scans in synchronization to support dual Doppler wind syntheses. CHILL and Pawnee radar data are available as separate datasets.

GPM 地面验证项目中的 Pawnee 雷达 MC3E 数据集由 Oklahoma 地区的 Midlatitude Continental Convective Clouds Experiment (MC3E) 实验期间的 Pawnee 雷达数据收集而成，该实验于 2011 年 5 月 24 日进行，旨在支持 CHILL 雷达和 NASA ER-2 仪器数据的采集。Pawnee 雷达为一台单极化（V 极化）多普勒雷达。在 ER-2 飞行期间，Pawnee 雷达进行了面向东方的宽方位角 PPI 扇区体积扫描，旨在为 ER-2 飞行区域提供全面的 3D 覆盖。当 ER-2 报告开始改变航向时，CHILL 和 Pawnee 雷达试图同时启动扇区扫描，以支持双多普勒风速分析。为了扩大 MC3E 的采样范围至更广泛的地理区域，NASA ER-2 飞机被指引至科罗拉多东北部地区，此时正值 2011 年 5 月 24 日广泛降雨期间。飞机沿一系列预定义的地面轨迹飞行，这些轨迹与 CHILL 雷达的径向线相吻合，有助于保持飞机位于一系列 RHI 扫描所形成的平面内。在径向飞行段末端的航向改变过程中，CHILL 和 Pawnee 雷达同步启动体积扫描，以支持双多普勒风速的综合分析。CHILL 和 Pawnee 雷达数据作为独立的数据集提供。