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Global Distribution and Seasonality of Martian Atmospheric HCl Explained Through Heterogeneous Chemistry
Trokhimovskiy, Alexander; Korablev, Oleg; Olsen, Kevin S. +4 more
Recent observations from the ExoMars Trace Gas Orbiter (TGO) have revealed the presence of hydrogen chloride (HCl) in the martian atmosphere. HCl shows strong seasonality, primarily appearing during Mars' perihelion period before decreasing faster than projected from photolysis and gas-phase chemistry. HCl profiles also display local anti-correlat…
Statistical Study of Electric Pc5 Pulsations in the Inner Magnetosphere Observed by Cluster
Li, Xinlin; Liu, Wenlong; Zhang, Dianjun +3 more
Ultra-low frequency (ULF) waves in the Pc5 band are essential for the transport of electrons in the radiation belt and the transport of energy from the solar wind into the magnetosphere. Based on ∼14-year of electric field data from Cluster satellite, the spatial distributions of power spectral densities (PSD) of electric field ULF waves in the in…
A Case Study on the Impact of Interplanetary Coronal Mass Ejection on the Martian O(1S) 557.7 nm Dayglow Emission Using ExoMars TGO/NOMAD-UVIS Observations: First Results
Vandaele, Ann Carine; Gérard, Jean-Claude; Thomas, Ian R. +6 more
We report, for the first time, the impact of interplanetary coronal mass ejections (ICME) on the recently discovered O(1S) 557.7 nm dayglow emission in the Martian atmosphere. While there are a few studies on the seasonal variation of 557.7 nm dayglow emission available in the literature, the impact of ICME has not been investigated so …