The impact of the stratospheric sudden warming event in 2021 on local atmospheric environment

This study pioneers the utilization of the YHGSM dataset to conduct an in-depth analysis of the ramifications of the stratosphere's sudden warming (SSW) event in 2021 on local atmospheric circulation, temperature, and density. The research first validates the precision of the YHGSM forecast data; subsequently, by computing the meridional temperature gradient and potential height gradient within the polar vortex, it elucidates the spatiotemporal dynamics of the SSW event's intensity; ultimately, it scrutinizes the SSW's influence on the ambient atmospheric wind field, density, and temperature. The findings ascertain that the YHGSM forecast data is reliable in accuracy and can faithfully delineate the inception, evolution, and dissipation of SSW, precipitating alterations in atmospheric circulation patterns, pronounced temperature oscillations, and consequently impacting the flight safety of aerial vehicles.