Simulated Maximum Wave Heights for the December 2016 Alaskan Arctic Extratropical Cyclone under Varying Sea Ice Scenarios

This dataset contains simulated wave data generated from the ADCIRC+SWAN model in the Alaskan Arctic and run for the December 2016 extratropical cyclone spanning from December 20th 2016 to January 9th 2017. Simulations differ in the sea ice forcing fields used in simulation. For the historical simulation, sea ice data was also obtained from ERA5 Climate Reanalysis while future decades' and scenario's projected sea ice fields were sourced from the CESM2-WACCM model. For each climate scenario and decade there are five available realizations and thus a single storm simulation is performed using daily sea ice specific to the year, emissions pathway, and ensemble member – making for a total of 20 simulations performed using climate model projected sea ice fields. Finally, two additional simulations were performed to establish an upper and lower bound of sea ice coverage. An open-water simulation, without sea ice as an input, and an ice-full simulation, where all sea ice input grid points within the Beaufort and Chukchi Seas are given a sea ice concentration of 100%. Data is contained in NetCDF format using an unstructured triangular mesh. The max_HS variable presents the maximum significant wave height (highest one thirds of wave heights) to occur for each node during the simulation.

本数据集包含基于ADCIRC+SWAN模型（ADCIRC+SWAN）在阿拉斯加北极区域生成的模拟海浪数据，模拟针对2016年12月20日至2017年1月9日期间的2016年12月温带气旋过程开展。本次模拟的差异体现在所采用的海冰强迫场（sea ice forcing fields）不同：历史模拟所用海冰数据取自ERA5气候再分析资料（ERA5 Climate Reanalysis），而未来年代及情景下的预估海冰场则来源于CESM2-WACCM模型（CESM2-WACCM）。针对每个气候情景与年代，共提供5个集合成员（ensemble member），因此针对对应年份的逐日海冰、排放路径（emissions pathway）及集合成员，各开展一次风暴模拟——基于气候模型预估海冰场的模拟总计共20组。此外，还额外开展了两组模拟以确定海冰覆盖范围的上下界：其一为无海冰输入的开阔水域模拟，其二为全冰模拟，即将波弗特海与楚科奇海内所有海冰输入网格点的海冰浓度设为100%。本数据集采用非结构化三角网格的NetCDF格式（NetCDF）存储，其中max_HS变量代表模拟时段内各网格节点出现的最大有效波高（significant wave height，即全部波浪高度中最高三分之一部分的统计值）。