Output fields from the NOAA Atlantic Real-Time Ocean Forecast System (RTOFS) for 2014-04-01 to 2014-04-30 (NODC Accession 0118274)

The NOAA Atlantic Real-Time Ocean Forecast System (RTOFS) dataset comprises output fields from the daily operational RTOFS model runs conducted at the National Centers for Atmospheric Prediction. Each model run produces a series of gridded fields containing results of model computations for ocean temperature, salinity, currents, sea-surface height, and possibly other properties. The fields are encoded in the standard GRIdded Binary (GRIB) file format. NODC compiles a series of files into monthly accessions to facilitate archival storage and public access. Two different sets of output fields are included: 1) daily 3-dimensional fields reported on the model's native hybrid (isopycnal plus z-level) vertical coordinates (note: prior to June 6, 2007, these fields are interpolated to z-levels); and 2) hourly fields reported for the surface level only. Each daily model run produces a 24-hr hindcast as well as forecasts out to 120 hours.美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）大西洋实时海洋预报系统（Real-Time Ocean Forecast System, RTOFS）数据集，包含由国家大气预报中心（National Centers for Atmospheric Prediction）开展的每日业务化RTOFS模型运行所生成的输出场。每一次模型运行都会生成一系列网格化场，其中涵盖针对海洋温度、盐度、海流、海面高度及其他潜在海洋要素的模型计算结果。此类场数据采用标准二进制格点（GRIdded Binary, GRIB）文件格式进行编码。美国国家海洋数据中心（National Oceanographic Data Center, NODC）将一系列文件整合为月度数据集包，以便于归档存储与公共访问。数据集包含两类不同的输出场：1）以模型原生混合（等密面加z平面）垂直坐标系输出的每日三维场（注：2007年6月6日之前的此类场数据已被插值至z平面坐标系）；2）仅针对表层输出的逐小时场数据。每日一次的模型运行会生成24小时的后报结果，以及最长120小时的预报结果。