GPM Ground Validation Raw Autonomous Parsivel Unit (APU) IFloodS V1

The GPM Ground Validation Raw Autonomous Parsivel Unit (APU) IFloodS dataset was collected by 14 Autonomous Parsivel Unit (APU) sites in eastern Iowa during the Global Precipitation Measurement (GPM) mission Iowa Flood Studies (IFloodS) field campaign. The campaign aimed to collect detailed measurements of precipitation at the Earth’s surface using ground instruments and advanced weather radars while simultaneously collecting data from satellites passing overhead. APU is an optical disdrometer system that measures precipitation particle size and fall velocity. This dataset consists of APU-calculated parameters and unfiltered drop spectrum data. The dataset files are available in ASCII text format from April 1 through May 24, 2013. Officially, the IFloodS campaign ran from May 1 to June 15, 2013, but the APUs were installed and had begun collecting data prior to the start of the campaign.

GPM 地面验证原始自主 Parsivel 单元（APU）IFloodS 数据集由 14 个位于爱荷华州东部的自主 Parsivel 单元（APU）站点在 GPM 任务爱荷华州洪水研究（IFloodS）野外考察期间收集。该考察旨在利用地面仪器和先进的天气雷达收集地球表面降水的详细测量数据，并同时收集从上方飞越的卫星数据。APU 是一种光学谱仪系统，用于测量降水粒子大小和下降速度。该数据集包含由 APU 计算的参数和未过滤的液滴谱数据。数据集文件以 ASCII 文本格式从 2013 年 4 月 1 日至 5 月 24 日可供获取。官方而言，IFloodS 考察从 2013 年 5 月 1 日至 6 月 15 日进行，但 APU 在考察开始前已安装并开始收集数据。