Output fields from the NOAA Atlantic Real-Time Ocean Forecast System (RTOFS) for 2011-04-01 to 2011-04-30 (NODC Accession 0073425)

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.NOAA大西洋实时海洋预报系统（Real-Time Ocean Forecast System，RTOFS）数据集包含由美国国家大气预测中心（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。每次模型运行都会生成一系列网格化场，其中包含海洋温度、盐度、海流、海面高度及其他可能的海洋要素的模型计算结果。此类数据场采用标准网格化二进制（GRIdded Binary，GRIB）文件格式进行编码。国家海洋数据中心（National Oceanographic Data Center，NODC）将一系列文件整合为月度归档包，以方便档案存储与公众获取。该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层）垂直坐标系发布的每日三维场（注：2007年6月6日之前的此类数据场已被插值至z层）；2）仅针对表层发布的逐小时场。每次每日模型运行都会生成一份24小时的后报结果，以及长达120小时的预报结果。