Poster Abrupt Change in the Lower Thermospheric Mean Meridional Circulation during Sudden Stratospheric Warmings and its Impact on Trace Species Orsolini, Yvan Joseph; Zhang, Jiarong; Limpasuvan, Varavut Publikasjonsdetaljer Arrangement: EGU General Assembly 2023 (Vienna & online) Dato: 23. april 2023 – 28. april 2023