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Modelling Non-Condensing Compositional Convection for Applications to Super-Earth and Sub-Neptune Atmospheres

(2023)

Authors:

Namrah Habib, Raymond T Pierrehumbert
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Origin and Evolution of Enceladus’s Tidal Dissipation

Space Science Reviews Springer Nature 219:7 (2023) 57

Authors:

Francis Nimmo, Marc Neveu, Carly Howett
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Preface for special issue on the Colour and Stereo Surface Imaging System (CaSSIS) at Mars

Planetary and Space Science Elsevier 236 (2023) 105753

Authors:

Elliot Sefton-Nash, James Wray, Ernst Hauber, Nicolas Thomas, Colin Wilson
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Venus Evolution Through Time: Key Science Questions, Selected Mission Concepts and Future Investigations

Space Science Reviews Springer Nature 219:7 (2023) 56

Authors:

Thomas Widemann, Suzanne E Smrekar, James B Garvin, Anne Grete Straume-Lindner, Adriana C Ocampo, Mitchell D Schulte, Thomas Voirin, Scott Hensley, M Darby Dyar, Jennifer L Whitten, Daniel C Nunes, Stephanie A Getty, Giada N Arney, Natasha M Johnson, Erika Kohler, Tilman Spohn, Joseph G O’Rourke, Colin F Wilson, Michael J Way, Colby Ostberg, Frances Westall, Dennis Höning, Seth Jacobson, Arnaud Salvador, Guillaume Avice, Doris Breuer, Lynn Carter, Martha S Gilmore, Richard Ghail, Jörn Helbert, Paul Byrne, Alison R Santos, Robert R Herrick, Noam Izenberg, Emmanuel Marcq, Tobias Rolf, Matt Weller, Cedric Gillmann, Oleg Korablev, Lev Zelenyi, Ludmila Zasova, Dmitry Gorinov, Gaurav Seth, CV Narasimha Rao, Nilesh Desai
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Revised upper limits for abundances of NH3, HCN and HC3N in the Martian atmosphere

Icarus Elsevier 407 (2023) 115789

Authors:

A Trokhimovskiy, Aa Fedorova, F Lefèvre, O Korablev, Kevin S Olsen, J Alday, D Belyaev, F Montmessin, A Patrakeev, N Kokonkov

Abstract:

The Atmospheric Chemistry Suite (ACS) onboard the ExoMars Trace Gas Orbiter (TGO) spacecraft has been studying Mars' atmosphere since 2018. The sensitivity of the middle infrared channel (MIR) allows it to address many ardent topics and it is capable of improving and establishing upper limits for many trace species. In this work we present analysis of transmittance spectra in the 3332.5–3338.6 cm−1 range with 30,000 resolution (λ∕Δλ), covering absorptions lines of three nitrogen-bearing species: ammonia (NH3), hydrogen cyanide (HCN) and cyanoacetylene (HC3N). According to existing models, all of those are not expected to be present in a CO2-rich Martian atmosphere, but outgassing or unknown chemistry sources cannot be discounted. The upper limits of 14, 1.5 and 11 ppbv are obtained for NH3, HCN and HC3N from individual occultation measurements during the warm and dusty perihelion season of martian year 36. For the ammonia and hydrogen cyanide the upper limits are improved compared to previously published results. A search for cyanoacetylene on Mars is reported for the first time.
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