GPM GROUND VALIDATION NEXRAD LEVEL II KMPX IFLOODS

The GPM Ground Validation Next Generation Weather Radar (NEXRAD) Level II IFloodS datasets were collected from four sites (see Table 1) from March 29, 2013 to June 18, 2013 for the GPM Ground Validation Iowa Flood Studies (IFloodS) field campaign in central-northeastern Iowa. Officially, the IFloodS campaign ran from May 1 to June 15, 2013 but the NEXRAD data was collected prior to the start, allowing for the wider period of record. There are currently 160 Weather Surveillance Radar-1988 Doppler (WSR-88D) or NEXRAD sites throughout the United States and select overseas locations. The resulting data includes the base data (Level-II) and the derived products (Level-III). These Level-II datasets include three meteorological base data quantities: reflectivity, mean radial velocity, and spectrum width. The GPM Ground Validation NEXRAD Level II IFloodS data files are in a custom binary format; the visualization and decoding of the data requires specialized software. Browse imagery is available in PNG file format.

GPM 地面验证项目中的下一代天气雷达（NEXRAD）二级 IFloodS 数据集，于 2013 年 3 月 29 日至 2013 年 6 月 18 日期间，在爱荷华州中东北部地区进行的 GPM 地面验证爱荷华洪水研究（IFloodS）现场活动期间，从四个站点（见表 1）收集而来。正式而言，IFloodS 活动从 2013 年 5 月 1 日至 6 月 15 日进行，但 NEXRAD 数据的收集提前于活动开始，从而允许记录更广泛的时段。目前，全美及部分海外地区共有 160 个气象监测雷达-1988 多普勒（WSR-88D）或 NEXRAD 站点。所获得的数据包括基础数据（二级）和派生产品（三级）。这些二级数据集包含三种气象基础数据量：反射率、平均径向速度和频谱宽度。GPM 地面验证 NEXRAD 二级 IFloodS 数据文件采用自定义二进制格式；数据的可视化和解码需要专用软件。浏览图像以 PNG 文件格式提供。