GPM Ground Validation Airborne Precipitation Radar 3rd Generation (APR-3) OLYMPEX V2

The GPM Ground Validation Airborne Precipitation Radar 3rd Generation (APR-3) OLYMPEX V2 dataset was collected from November 12, 2015 to December 19, 2015 during the GPM Ground Validation Olympic Mountains Experiment (OLYMPEX) field campaign held in the Pacific Northwest. This dataset is version -2 (V2) of the APR-3, an enhanced and upgraded instrument derived from the APR-2 used in previous field campaigns. APR-3 has the addition of W-band measurement capability, and scans cross-track from +/- 25° to the right and left of nadir. Ku-band, Ka-band, and W-band frequency Doppler measurements are made by APR-3 from the DC-8 aircraft at 10 km altitude during OLYMPEX. The APR-3 dataset files are in HDF-5 format with JPG format browse images. This dataset contains radar reflectivity, Doppler velocity for all bands, linear depolarization ratio at Ku-band, and normalized radar cross section measurements at Ka and Ku-bands.

GPM地面验证空中降水雷达第三代（APR-3）OLYMPUS实验V2数据集于2015年11月12日至2015年12月19日，在太平洋西北部举行的GPM地面验证奥林匹克山脉实验（OLYMPEX）现场活动中采集。该数据集为APR-3的版本-2（V2），系基于先前现场活动所使用的APR-2进行增强与升级的仪器。APR-3新增了W频段测量能力，并能够对下视方向的正负25°进行横越扫描。在OLYMPUS实验期间，APR-3在10公里的高度，从DC-8飞机上对Ku频段、Ka频段和W频段进行频率多普勒测量。APR-3数据集文件以HDF-5格式存储，并附带JPG格式的浏览图像。本数据集包含雷达反射率、所有频段的多普勒速度、Ku频段的线性去极化比，以及Ka频段和Ku频段的归一化雷达截面积测量值。