Output fields from the NOAA WAVEWATCH III® wave model monthly hindcasts for 2015-09 (NCEI Accession 0157067)

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 NCEI on a monthly basis. NCEI 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）WAVEWATCH III®海浪后报数据集，包含由美国国家环境预报中心（National Centers for Environmental Prediction，NCEP）开展的月度WAVEWATCH III®海浪后报模拟所产出的输出场。单次模拟将生成一组文件，其中涵盖由输入参数与平均海浪参数组成的网格化场数据，例如有效波高、波向、波频等。该数据集每月开展一次海浪模拟，以上一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将按月传输至国家环境信息中心（National Centers for Environmental Information，NCEI）。国家环境信息中心会将这批文件整合为月度归档包，以方便档案留存与公众获取。上述场数据采用标准网格化二进制第2版（GRIdded Binary version 2，GRIB2）文件格式编码。数据集同时包含以表格文本格式呈现的海浪频谱数据摘要，以及选定站点的详细频谱数据。本次数据集包含9组不同的输出场，分别对应数值模拟中使用的9套网格。这9套网格涵盖全球网格，以及覆盖北大西洋、北太平洋大部分海域的区域网格与近岸网格。