SGP97 GCIP/EOP Surface: Precipitation NCEP/EMC 4KM Gridded Data (GRIB) Radar Est. no bias removal RAD-2001

The Southern Great Plains 1997 (SGP97) Hydrology Experiment originated from an interdisciplinary investigation, "Soil Moisture Mapping at Satellite Temporal and Spatial Scales" (PI: Thomas J. Jackson, USDA Agricultural Research Service, Beltsville, MD) selected under the NASA Research Announcement 95-MTPE-03. The Global Energy and Water Cycle Experiment (GEWEX) Continental-scale International Project (GCIP) Enhanced Observing Period (EOP) takes place in the Mississippi River basin, which provides a number of watershed areas that are potentially useful for hydrologic focused studies. The temporal coverage for this dataset is as follows: Begin datetime: 1996-05-01 00:00:00, End datetime: 2001-12-31 23:59:59. This dataset contains the National Centers for Environmental Prediction (NCEP) Environmental Modeling Center (EMC) 4 KM GRIB radar estimate (no bias removal) "RAD" data. A prototype, real-time, hourly, multi-sensor National Preciptation Analysis (NPA) has been developed at NCEP in cooperation with the Office of Hydrology (OH). This analysis merges two data sources that are currently being collected in real-time by OH and NCEP. Hourly digital precipitation (HDP) radar estimates are created by the WSR-88D Radar Product Generator on a 131 X 131 4-km grid centered over each radar site. Data analysis routines, including a bias correction of the radar estimates using rain gage data, have been adapted by NCEP on a national 4-km grid from algorithms developed by OH and executed regionally at NWS River Forecast Centers (RFC). This dataset only contains the NCEP 4 KM GRIB Data hourly, 6-hourly, and daily radar estimate (no bias removal). 6-hourly data are generally available at 00Z, 06Z, 12Z, and 18Z. Daily data are generally available at 12Z. Depending on the time period selected, all three datasets may or may not be available. Other NCEP 4 KM GRIB Data including gage-only analysis, multi-sensor analysis (gage and unbiased radar), radar estimate after bias removal, and gage-only analysis using 24h accumulated ("RFC") data are available as independent datasets. Depending on the time period selected, all five types may or may not be available. Please see GCIP/EOP: Surface NCEP Ancillary Catalogue of Available GCIP Precipitation Data (NCEP/EMC). The format of the files is GRIB. The files are compressed using the UNIX "compress" command and "uncompress" must be used before decoding. Resources in this dataset:Resource Title: GeoData catalog record. File Name: Web Page, url: https://geodata.nal.usda.gov/geonetwork/srv/eng/catalog.search#/metadata/SGP974KMnobias_JJM_2015-04-24_1102

南方大平原1997年（SGP97）水文实验起源于一项跨学科调查——“卫星时空尺度土壤湿度制图”（负责人：托马斯·J·杰克逊，美国农业部农业研究服务局，马里兰州贝塞斯达），该项目根据NASA研究公告95-MTPE-03选出。全球能量和水循环实验（GEWEX）大陆尺度国际项目（GCIP）增强观测期（EOP）在密西西比河流域进行，该流域提供了众多可能对水文研究有益的流域区域。本数据集的时间覆盖范围为：起始时间：1996年5月1日00:00:00，结束时间：2001年12月31日23:59:59。本数据集包含美国国家环境预报中心（NCEP）环境建模中心（EMC）4公里GRIB雷达估算数据（未去除偏差）“RAD”数据。国家降水分析（NPA）的原型、实时、每小时、多传感器系统已在NCEP开发，并与水文学办公室（OH）合作。该分析融合了OH和NCEP正在实时收集的两种数据源。每小时数字降水（HDP）雷达估算由WSR-88D雷达产品生成器在一个以每个雷达站为中心的131 X 131 4公里网格上创建。NCEP已在全国4公里网格上采用OH开发的算法，并在国家气象水文预报中心（RFC）区域执行的数据分析程序中进行了偏差校正，包括使用雨量计数据对雷达估算进行偏差校正。本数据集仅包含NCEP 4公里GRIB数据的小时、6小时和日雷达估算（未去除偏差）。6小时数据通常在00Z、06Z、12Z和18Z可用。日数据通常在12Z可用。根据所选时间范围，所有三个数据集可能不可用。其他NCEP 4公里GRIB数据包括仅雨量计分析、多传感器分析（雨量计和无偏差雷达）、去除偏差后的雷达估算以及使用24小时累计数据（“RFC”）的仅雨量计分析，均作为独立数据集提供。根据所选时间范围，所有五种类型的数据可能不可用。请参阅GCIP/EOP：NCEP表面辅助数据目录中可用的GCIP降水数据（NCEP/EMC）。文件格式为GRIB。文件使用UNIX“compress”命令压缩，解码前必须使用“uncompress”命令。本数据集资源：资源标题：GeoData目录记录。文件名：网页，网址：https://geodata.nal.usda.gov/geonetwork/srv/eng/catalog.search#/metadata/SGP974KMnobias_JJM_2015-04-24_1102