5-km resolution ensemble climate data around Hokkaido (heavy rainfall event)

The dataset contains annual maximum rainfall events at 5 km resolution created using dynamic downscaling of d4PDF 20 km regional experiments. The target event of the dynamical downscaling is set as maximum 72 hours rainfall event between June 1st to November 30th over the catchement area of the Obihiro reference point in Tokachi River. The target domain for downscaling was the area around Hokkaido (some islands were not included). The dynamical downscaling covered three scenarios: historical climate experiment (60 years x 50 ensemble members from 1951 to 2010), +2K future climate experiment (60 years x 9 ensemble members x 6 SST patterns), and +4K future climate experiment (60 years x 15 ensemble members x 6 SST patterns). This dataset contains several thousand years of heavy rainfall at 5km resolution. It is expected to be used for various applications such as statistical evaluation of heavy rainfall, flood risk assessment, and adaptation measures.

本数据集包含分辨率为5千米的年度极端降雨事件，其通过对d4PDF的20千米区域试验结果开展动力降尺度生成。本次动力降尺度的目标事件为十胜川带广参考点集水区内，每年6月1日至11月30日时段内的72小时极端降雨事件。降尺度目标区域为北海道周边区域（未包含部分附属岛屿）。本次动力降尺度涵盖三类试验场景：1951年至2010年的历史气候试验（60年 × 50个集合成员）、+2K未来气候试验（60年 × 9个集合成员 × 6个海表温度（Sea Surface Temperature, SST）模态），以及+4K未来气候试验（60年 × 15个集合成员 × 6个SST模态）。本数据集包含数千个模拟年份的5千米分辨率强降雨事件数据，可应用于强降雨统计评估、洪水风险评估及气候适应措施制定等诸多场景。