Output fields from the NOAA WAVEWATCH III® wave model monthly hindcasts for 2016-04 (NCEI Accession 0157491)

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）的WAVEWATCH III®后报数据集，包含美国国家环境预报中心（National Centers for Environmental Prediction, NCEP）开展月度WAVEWATCH III®后报模式运行所生成的输出场。每次模式运行都会生成一组文件，内含由输入参数与平均海浪参数构成的格点场，有效波高、波向、波频等均为其中涵盖的参数。该数据集每月开展一次海浪模拟，模拟将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些文件整合为月度入藏数据集，以方便归档留存与公众获取。所有格点场均采用标准格点二进制格式第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汇总，以及部分选定站点的详细海浪谱数据。本次数据集共包含9套不同的输出场，分别对应数值模拟中所采用的9套网格，涵盖一套全球网格，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。