Track Files with Characteristics and Accompanying Atmospheric Data for Long Track Tropopause Polar Vortices from 1979-2018

Tropopause polar vortices (TPVs) are closed circulations centered on the tropopause that form and predominately reside in high latitudes. Due to their attendant flow, TPVs have been shown to influence surface weather features, and thus, a greater understanding of the dynamics of these features may improve our ability to forecast impactful weather events. These data include a subset of TPVs that have lifetimes of longer than two weeks (the 95th percentile of all TPV cases between 1979 and 2018); these long-lived vortices offer a unique opportunity to study the conditions under which TPVs strengthen and analyze patterns of vortex formation and movement. These data use ERA-Interim, along with TPV tracks derived from the same reanalysis, including data on the formation, motion, and development of these long-lived vortices. Data also include long-lived TPVs that form predominately by splitting from existing vortices. Data from non-likely split genesis events are also included. Seasonal variations in the life cycles of long-lived vortices are included.

对流层顶极涡（Tropopause Polar Vortices, TPVs）是中心位于对流层顶的闭合环流，主要形成并存在于高纬度地区。由于其伴随气流，TPVs已被证实会影响地面天气特征，因此，深入理解这些特征的动力学机制可能提升我们对重要天气事件的预报能力。本数据集包含生命周期超过两周的TPVs子集（1979至2018年间所有TPV案例的95百分位）；这些长寿命涡旋为研究TPVs增强的条件及分析涡旋形成与移动模式提供了独特机遇。该数据采用ERA-Interim再分析资料，以及从同一再分析数据中提取的TPV轨迹，包括这些长寿命涡旋的形成、运动与发展数据。数据集还包含主要通过分裂现有涡旋形成的长寿命TPVs，以及非分裂生成事件的数据。此外，数据集涵盖了长寿命涡旋生命周期的季节变化信息。