Catalogs for Future Antarctic Atmospheric Rivers in CESM2 - Future with mean IWV scaling, 2015-2100

This dataset uses the CESM2 large ensemble (Rodgers et al. 2021, Danabasoglu et al. 2020) to detect Antarctic atmospheric rivers (ARs) in the present-day and 21st century. The catalog is based on the polar-specific AR detection tool developed by Wille et al. (2021), which uses the 98th percentile of poleward integrated water vapor transport and a 20-degree latitudinal extent as the threshold for ARs. Here each file corresponds to one of forty ensemble members from the CESM2 large ensemble, all under the smoothed biomass burning protocol. This dataset consists of the future catalogs for Antarctic ARs (2015-2100) with scaling for moisture according to the ensemble mean relative increase in integrated water vapor, meaning detection is based on the product of the present-day 98th percentile of poleward integrated water vapor transport and the future relative increase in atmospheric moisture. Data are stored as three-dimensional arrays with time, latitude, and longitude coordinates, and a binary indicator for the presence of an AR at a given time and location.

本数据集采用CESM2大集合（CESM2 Large Ensemble）（Rodgers等人，2021；Danabasoglu等人，2020），用于检测当代及21世纪的南极大气河流（Antarctic atmospheric rivers, ARs）。该检测目录基于Wille等人（2021）开发的极区专属大气河流检测工具，该工具以极向整层水汽输送的98百分位数与20纬度跨度作为大气河流的判定阈值。本数据集的每个文件对应CESM2大集合的40个集合成员之一，所有成员均采用平滑生物质燃烧排放方案。本数据集包含2015-2100年的南极大气河流未来情景检测目录，并依据整层水汽的集合平均相对增量进行水汽缩放，即大气河流的判定基于当代极向整层水汽输送98百分位数与未来大气水汽相对增量的乘积。数据以包含时间、纬度、经度坐标的三维数组形式存储，并附带给定时间和位置是否存在大气河流的二进制标识。