[P-EM09] Vertical coupling in the atmosphere and Ionosphere

[PEM09-P01] Local-time Variabilities of SABER CO₂ in the Mesosphere and Lower Thermosphere Region

*Cornelius Csar Jude Salinas¹, Loren Chang¹, Danie Liang², Jia Yue³, Liying Qian⁴, Quan Gan⁵, James Russel III³, Martin G Mlynczak⁶ (1.Institute of Space Science, National Central University, 2.Institute of Earth Science, Academia Sinica, 3.Department of Atmospheric Sciences, Hampton University, 4.High Altitude Observatory, National Center for Atmospheric Research, 5.Department of Physics and Astronomy, Clemson University, 6.NASA Langley Research Center)

Keywords:Carbon Dioxide, Mesosphere and Lower Thermosphere Region, Tides

This work presents the local-time variabilities of CO₂ in the Mesosphere and Lower Thermosphere region (MLT region) as observed by the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) onboard the Thermosphere Ionosphere Mesosphere Energetics and Dynamics Satellite (TIMED Satellite). These are then compared to CO₂ as modeled by the Whole Atmosphere Community Climate Model – eXtended (WACCM-X). Also using WACCM-X, a tendency analysis using the continuity equation is done to explain the local-time variabilities of CO₂ in the MLT region. Finally, consequences of including a significant local-time variability in CO₂ when retrieving SABER temperature profiles are determined.