[P-EM12] Coupling Processes in the Atmosphere-Ionosphere System

[PEM12-16] Observations and Simulaions of Atmospheric Wave Effects Induced by the Antropogenic Orbiters

*Charles Lin¹, Marty Chou¹, Ray Huang¹, P. K. Rajesh¹, Jong-Min Choi¹, Shih-Ping Chen¹, Mitchell Shen², Minyang Chou³ (1.Department of Earth Sciences, National Cheng Kung University, 2.Department of Astrophysical Sciences, Princeton University, 3.Goddard Space Flight Center, NASA, Greenbelt, Maryland)

Keywords:Acoustic-Gravity Waves, Launch Vehicle, Ionosphere Perturbations

Upper atmosphere perturbations have large proportions coming from lower atmosphere and even lithosphere activities, providing opportunities to explore the vertical coupling phsenomena and the underlying mechanisms. For example, earthquakes/tsunamis produce explosive wave bulge propsgating in the whole atmosphere system starting from fast in phase propagation of the acoustic waves. Following that slowing propagating gravity wave expands to larger horizontal distances showing the wavefronts leading the source of the perturbation. This is is clearly seen in the simulations of 2011 Tohoku earthquake/tsunami and 2022 Tonga volcano events. Another significant source of perturbations is the anthropogenic launch vehicles or rockets flying across lower, middle and higher atmospheric regions. We have been examing dozens of such kind of events and most of them show acoustic wave signatures alone. In the rare occasions, similar explosive wave bulge occurred, such as the lauch of JASON-3 mission by the Falcon-9 rocket of Space-X in 2016. In comparisons, other launches with various angles of launches are analyzed to see if the factor matters significantly. Finally, we also simulate the events by considering both the velocity and momentum deposition of the launch vehicles using the non-hydrostatic fluid models of the atmosphere and ionosphere. Resutls show almost identical in both observation and simulation for the 2016 JASON-3 launch event. The acoustic wave and the gravity wave were separately occurred at the different stages of the flight. This is the first successful simulation of the rocket event.