The Long-Term Evolution of the Atmosphere of Venus: Processes and Feedback Mechanisms

• DOI: 10.1007/s11214-022-00924-0
• Publication Date: 2022-10-07T15:57:24Z
• Authors: Cedric Gillmann; M. J. Way; Guillaume Avice; Doris Breuer; Gregor J. Golabek; Dennis Höning; Joshua Krissansen...; Helmut Lammer; Joseph G. O’Rourke; Moa Persson; Ana-Catalina Plesa; Arnaud Salvador; Manuel Scherf; Mikhail Y. Zolotov
• Keywords: Atmosphere of Venus; Atmospheric escape; Outgassing; Early Earth; Icy moon

Abstract This work reviews the long-term evolution of atmosphere Venus, and modulation its composition by interior/exterior cycling. The formation Venus’s atmosphere, leading to contemporary surface conditions, remain hotly debated topics, involve questions that tie into many disciplines. We explore these various inter-related mechanisms which shaped starting with volatile sources sinks. Going from deep interior top we describe volcanic outgassing, surface-atmosphere interactions, escape. Furthermore, address more complex aspects history including role Late Accretion impacts, how magnetic field generation is tied evolution, implications geochemical geodynamical feedback cycles for atmospheric evolution. highlight plausible end-member evolutionary pathways Venus could have followed, accretion present-day state, based on modeling observations. In a first scenario, planet was desiccated escape during magma ocean phase. second harbored liquid water long periods time, until temperate climate destabilized it entered runaway greenhouse third inefficient outgassing kept inside planet, where hydrogen trapped in core mantle oxidized. discuss existing evidence future observations/missions required refine our understanding planet’s between interior, surface, been operating past, present or Venus.