Data for "Freezing rain events related to atmospheric rivers and associated mechanisms for western North America"

The data provided here are atmospheric rivers (AR) characteristics (yearly distributions of mean IVT and AR frequency during September–April) identified in the NCEP North American Regional Reanalysis (30-km) and CRCM5 simulations (0.44 degree) for the present (1976-2005) and future (2070-2099) climate. The freezing rain (FR) characteristics (e.g. fraction of AR-related FR events relative to the total FR events during September–April) and the environmental fields (the 925-2m thermal stratification and the ascent contributed by the differential vorticity advection) associated with AR-related FR are also provided.The data is provided in python .pckl format. The example code for reading each of the provided .pckl files is given in Readme.txt.本数据集提供了当前气候（1976-2005年）与未来气候（2070-2099年）情景下，基于NCEP北美区域再分析资料（30公里分辨率）与CRCM5模拟结果（0.44度分辨率）识别得到的大气河流（Atmospheric Rivers, AR）特征，具体包括9月至4月期间平均垂直积分水汽通量（Vertically Integrated Water Vapor Transport, IVT）的年分布与AR发生频率。同时还提供了与AR相关冻雨相关的特征数据：例如9月至4月期间AR关联冻雨事件占总冻雨事件的比例，以及伴随AR关联冻雨出现的环境场数据，包括925百帕至2米高度层的热力层结，以及由差分涡度平流贡献的上升运动。本数据集以Python的.pckl格式存储。读取各.pckl数据文件的示例代码详见Readme.txt文件。