摘要
Based on high-altitude wind data in about one year, the seasonal changes and vertical profiles of meridional wind in near space were studied, and the reasons for the increase of meridional wind in spring and winter were analyzed. Meanwhile, the seasonal distribution of atmospher- ic circulation in the stratosphere was studied, and the seasonal changes and mechanism of wind conversion from the east to the west were re- vealed. The results show that the speed of meridional wind in near space was the highest in spring, followed by autumn and winter, while it was the lowest in summer; the increase of meridional wind in spring and winter was related to weather systems in the troposphere, such as the development of strong warm ridge over Xinjianq and cold trouclh system, and the svstem resulted in the increase of meridional wind.
Based on high-altitude wind data in about one year, the seasonal changes and vertical profiles of meridional wind in near space were studied, and the reasons for the increase of meridional wind in spring and winter were analyzed. Meanwhile, the seasonal distribution of atmospher- ic circulation in the stratosphere was studied, and the seasonal changes and mechanism of wind conversion from the east to the west were re- vealed. The results show that the speed of meridional wind in near space was the highest in spring, followed by autumn and winter, while it was the lowest in summer; the increase of meridional wind in spring and winter was related to weather systems in the troposphere, such as the development of strong warm ridge over Xinjianq and cold trouclh system, and the svstem resulted in the increase of meridional wind.
