Based on the latest oceanic surface drifter dataset from the global drifter program during 2000–2019, this study investigated the global variation of relative frequency shift (RFS), near-inertial energy (NIE) and inverse excess bandwidth (IEB) of near-inertial motions, and analyzed their relations with oceanic mesoscale dynamics, relative vorticity and strain. Compared with previous works, we have some new findings in this study: (1) the RFS was high with negative values in some regions in which we found a significant blue shift of the RFS in the equatorward of 30°N (S) and from 50°N to 60°N in the Pacific, and a red shift in the western boundary currents and their extension regions, the North Atlantic and the Antarctic Circumpolar Current regions; (2) more peak values of the NIE were found in global regions like the South Indian Ocean, the Luzon Strait and some areas of the South Ocean; (3) the global distribution of the IEB were characterized by clear zonal bands and affected by vorticity and wind field; (4) the RFS was elevated as the absolute value of the gradient of vorticity increased, the IEB did not depend on the gradient of vorticity, and the eddy kinetic energy (EKE) weakened with the decrease of the absolute value of RFS; (5) the NIE decreased with increasing absolute value of the relative vorticity and the gradient of vorticity, but it increased with increasing strain and EKE when EKE was larger than 0.003 2 m²/s².

基于2000-2019年全球漂泊者计划的最新海洋表面漂泊者数据集，本研究调查了相对惯性的相对频移（RFS），近惯性能量（NIE）和反向超额带宽（IEB）的全球变化运动，并分析了它们与海洋中尺度动力学，相对涡度和应变的关系。与以前的工作相比，我们在本研究中有一些新发现：（1）在某些区域，RFS较高，为负值，在这些区域中，我们发现RFS在赤道30°N（S）处有明显的蓝移，并且从太平洋地区为北纬50°至60°，西部边界洋流及其延伸区域，北大西洋和南极洲极地洋流区域发生红移；（2）在南印度洋等全球地区发现了更多的NIE峰值，吕宋海峡和南大洋的某些地区；（3）IEB的全球分布具有明显的纬向带特征，并受涡度和风场的影响；（4）随着涡度梯度绝对值的增加RFS升高，IEB不依赖于涡度梯度，涡旋动能（EKE）随着RFS绝对值的减小而减弱。（5）NIE随相对涡度绝对值和涡度梯度的增加而减小，但当EKE大于0.003 2 m时，NIE随应变和EKE的增加而增加。IEB不依赖于涡度梯度，随着RFS绝对值的减小，涡动能（EKE）减弱。（5）NIE随相对涡度绝对值和涡度梯度的增加而减小，但当EKE大于0.003 2 m时，NIE随应变和EKE的增加而增加。IEB不依赖于涡度梯度，随着RFS绝对值的减小，涡动能（EKE）减弱。（5）NIE随相对涡度绝对值和涡度梯度的增加而减小，但当EKE大于0.003 2 m时，NIE随应变和EKE的增加而增加。² /秒²。