Output fields from the NOAA WAVEWATCH III® wave model monthly hindcasts for 2009-08 (NODC Accession 0089862)

The NOAA WAVEWATCH III® hindcast dataset comprises output fields from the monthly WAVEWATCH III® hindcast model runs conducted at the National Centers for Environmental Prediction. Each model run produces a collection of files containing gridded fields comprised of input and mean wave parameters such as the significant wave height, directions, frequencies etc. Once per month, a wave simulation is carried out using restart files from the previous month and forced by hindcast wind products for the entire month. The resulting output data are transferred to NODC on a monthly basis. NODC assembles the series of files into monthly accessions to facilitate archival retention and public access. The fields are encoded in the standard GRIdded Binary version 2 (GRIB2) file format. Wave spectral data summaries are included, as well as detailed spectra at selected locations, in tabular text format. Nine different sets of output fields, corresponding to nine different grids used in the numerical simulations, are included. These include a global grid, as well as regional and coastal grids covering much of the North Atlantic and North Pacific oceans.

美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）的WAVEWATCH III®后报数据集，收录了美国国家环境预报中心（National Centers for Environmental Prediction, NCEP）开展的月度WAVEWATCH III®后报模型运行所生成的输出场。每次模型运行都会生成一组文件，其中包含由输入参数与平均海浪参数构成的格点场，例如有效波高、波向、波频等。每月开展一次海浪模拟，以上月的重启文件作为初始条件，并以整月的后报风场产品作为强迫驱动场。最终产出的输出数据会按月传输至美国国家海洋数据中心（National Oceanographic Data Center, NODC）。NODC会将这一系列文件整合为月度入藏批次，以方便档案留存与公众获取。上述格点场采用标准二进制格点数据第2版（GRIdded Binary version 2, GRIB2）文件格式进行编码。数据集还包含以表格文本格式呈现的海浪谱数据摘要，以及选定观测点的详细海浪谱信息。本次数据集共包含九组输出场，分别对应数值模拟中所使用的九种不同格网，涵盖全球格网，以及覆盖北大西洋、北太平洋大部分海域的区域格网与近岸格网。