The Tibetan Plateau vortex (TPV) is a mesoscale weather system active in the near-surface layer, which is one of the major systems for the generation of precipitation in the Tibetan Plateau (TP). However, no long-term observations of the TPVs are available due to the scarcity of observations in the TP. Thereby, long-term, high-accuracy reanalysis products are a reliable source for the analysis of characteristic TPV activities and possible mechanisms behind. In the present study, an objective analysis method is implemented to obtain a complete dataset of TPV based on several reanalysis products, including the ERA-Interim, ERA40, JRA55, NCEP CFSR, and NASA MERRA2. The TPVs are detected and tracked by the minima in geopotential height at 500 hPa. Results indicate that the TPVs derived from multiple reanalysis products have quite similar spatial patterns and temporal variability. The characteristic parameters of the TPVs derived from a given reanalysis data are related to the resolution of this reanalysis product. Higher-resolution reanalysis products can yield more low-pressure systems, which explains why the TPVs derived from high-resolution reanalysis datasets generally have longer lifetime, stronger and larger vortex scale than those from low-resolution reanalysis products, although the total number of TPVs are similar. The annual average number of TPVs generated in the TP is 63.5, and these TPVs largely originate in the mountainous area of the central western TP around (34° N, 78–95° E) and a belt zone (30° N, 80–84° E) in the southern TP, where the elevation is around 5500 m. The TPVs often dissipate in low valleys and the lee side of mountains. They mainly occur in the warm season during May–September, most active in the summer and least active in the winter. More TPVs form in the daytime than in the nighttime. Those TPVs that move out of the TP account for less than 10–14% of all TPVs, and they usually follow three moving paths: eastward (6.9–7.8%), northeastward (2.3–3.4%) and southward (2.3–3.5%).

青藏高原涡（TPV）是活跃在近表层的中尺度天气系统，它是青藏高原（TP）产生降水的主要系统之一。但是，由于TP中缺乏观测资料，因此无法获得TPV的长期观测资料。因此，长期，高精度的再分析产品是用于分析特征性TPV活动及其背后可能机制的可靠来源。在本研究中，基于多种再分析产品（包括ERA-Interim，ERA40，JRA55，NCEP CFSR和NASA MERRA2），采用客观分析方法来获得完整的TPV数据集。通过在500 hPa处的最小地势高度检测并跟踪TPV。结果表明，来自多种再分析产品的TPV具有非常相似的空间格局和时间变异性。从给定的重新分析数据得出的TPV的特征参数与该重新分析产品的分辨率有关。高分辨率再分析产品可以产生更多的低压系统，这解释了为什么高分辨率再分析数据集衍生的TPV的寿命通常比低分辨率再分析产品的TPV更长，更强且涡旋规模更大，尽管TPV的总数相似。TP中产生的TPV的年平均数量为63.5，这些TPV大部分起源于TP中西部的山区（北纬34°，东经78-95°）和带状区域（北纬30°，南经80- TP南部海拔84°E），海拔约5500 m。TPV经常消散在低谷和山脉的背风处。它们主要发生在5-9月的温暖季节，夏季最活跃，冬季最不活跃。与白天相比，白天形成的TPV数量更多。那些从TP移出的TPV不到所有TPV的10–14％，它们通常遵循三个移动路径：向东（6.9–7.8％），向东北（2.3–3.4％）和向南（2.3–3.5％） ）。