GPM GROUND VALIDATION AUTONOMOUS PARSIVEL UNIT (APU) IFLOODS V1

The GPM Ground Validation Autonomous Parsivel Unit (APU) IFloodS dataset collected data from several sites in eastern Iowa during the spring of 2013. The APU dataset for the Iowa Flood Studies (IFloodS) Field Experiment provides precipitation data including precipitation drop size, counts, and distribution. The goals of the campaign were to collect detailed measurements of precipitation at the Earth's surface using ground instruments and advanced weather radars and, simultaneously, collect data from satellites passing overhead. The APU is an optical disdrometer based on single particle extinction that measures particle size and fall velocity. This APU consists of the Parsivel, which was developed by OTT in Germany, and its support systems, which were designed and built by the University of Alabama in Huntsville.

GPM 地面验证自主 Parsivel 单元（APU）IFloodS 数据集于 2013 年春季在爱荷华州东部多个地点收集了数据。该 APU 数据集针对爱荷华洪水研究（IFloodS）野外实验，提供了包括降水滴大小、计数和分布在内的降水数据。此次活动的目标是通过地面仪器和先进的天气雷达对地球表面的降水进行详细测量，并同时收集过境卫星的数据。APU 是一种基于单颗粒消光的光学谱仪，用于测量颗粒大小和下降速度。该 APU 包含由德国 OTT 开发的 Parsivel，以及由阿拉巴马大学亨茨维尔分校设计和建造的支持系统。