论文标题
评估1958 - 2021年期间200 MBAR区域风的气候度量共进趋势的评估
Assessment of trends in an intergrated climate metric-Analysis of 200 mbar zonal wind for the period 1958-2021
论文作者
论文摘要
使用ERA5和JRA-55重新分析数据集在几乎相等的区域的纬度频段上，我们分析了1958 - 2021年期间200 MBAR区域风异常的趋势以及极地喷气流的年度均值纬度。我们发现在JRA-55或ERA5数据集中，基本上没有200 MBAR区域风的变化。此外，极性喷射芯在北半球的极端移动，但是运动在统计学上并不显着，而在南半球完全没有极点转移。
Using the ERA5 and JRA-55 reanalysis datasets on latitude bands of nearly equal area, we analyze the trend of 200 mbar zonal wind anomalies for the period 1958-2021 as well as annual-mean latitude of the polar jet stream. We find basically no change of 200 mbar zonal wind in either the JRA-55 or ERA5 dataset. In addition, the polar jet core moves poleward in the Northern Hemisphere, but the movement is not statistically significant, while no poleward shift at all has occurred in the Southern Hemisphere.
