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Persephone: A Pluto-system Orbiter and Kuiper Belt Explorer

The Planetary Science Journal American Astronomical Society 2:2 (2021) 75

Authors:

Carly JA Howett, Stuart J Robbins, Bryan J Holler, Amanda Hendrix, Karl B Fielhauer, Mark E Perry, Fazle E Siddique, Clint T Apland, James C Leary, S Alan Stern, Heather Elliott, Francis Nimmo, Simon B Porter, Silvia Protopapa, Kelsi N Singer, Orenthal J Tucker, Anne J Verbiscer, Bruce B Andrews, Stewart S Bushman, Adam V Crifasi, Doug Crowley, Clint L Edwards, Carolyn M Ernst, Blair D Fonville, David P Frankford, Dan T Gallagher, Mark E Holdridge, Jack W Hunt, JJ Kavelaars, Chris J Krupiarz, James S Kuhn, William McKinnon, Hari Nair, David H Napolillo, Jon P Pineau, Jani Radebaugh, Rachel O Sholder, John R Spencer, Adam Thodey, Samantha R Walters, Bruce D Williams, Robert J Wilson, Leslie A Young
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A Comodulation Analysis of Atmospheric Energy Injection Into the Ground Motion at InSight, Mars

Journal of Geophysical Research Planets American Geophysical Union (AGU) 126:4 (2021)

Authors:

C Charalambous, AE Stott, WT Pike, JB McClean, T Warren, A Spiga, D Banfield, RF Garcia, J Clinton, S Stähler, S Navarro, P Lognonné, J‐R Scholz, T Kawamura, M van Driel, M Böse, S Ceylan, A Khan, A Horleston, G Orhand‐Mainsant, LM Sotomayor, N Murdoch, D Giardini, WB Banerdt
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Listening for the Landing: Seismic Detections of Perseverance's Arrival at Mars With InSight

Earth and Space Science American Geophysical Union (AGU) 8:4 (2021)

Authors:

Benjamin Fernando, Natalia Wójcicka, Marouchka Froment, Ross Maguire, Simon C Stähler, Lucie Rolland, Gareth S Collins, Ozgur Karatekin, Carene Larmat, Eleanor K Sansom, Nicholas A Teanby, Aymeric Spiga, Foivos Karakostas, Kuangdai Leng, Tarje Nissen‐Meyer, Taichi Kawamura, Domenico Giardini, Philippe Lognonné, Bruce Banerdt, Ingrid J Daubar
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Observations of Mars with ALMA: potential for future constraints of global circulation models

JOURNAL OF ASTRONOMICAL TELESCOPES INSTRUMENTS AND SYSTEMS 7:2 (2021) ARTN 025001

Authors:

Maxwell C Parks, Conor A Nixon, Geronimo L Villanueva, Michael D Smith, Alain SJ Khayat, Alexander E Thelen, Eric Villard, Steven B Charnley, Patrick GJ Irwin
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Seasonal reappearance of HCl in the atmosphere of Mars during the Mars year 35 dusty season

Astronomy and Astrophysics EDP Sciences 647:March 2021 (2021) A161

Authors:

Kevin Olsen, A Trokhimovskiy, L Montabone, Aa Fedorova, M Luginin, F Lefèvre, Oi Korablev, F Montmessin, F Forget, E Millour, L Baggio, Juan Alday Parejo, Cf Wilson, Patrick Irwin, Da Belyaev, A Patrakeev, A Shakun

Abstract:

HCl was discovered in the atmosphere of Mars for the first time during the global dust storm in Mars year (MY) 34 (July 2018) using the Atmospheric Chemistry Suite mid-infrared channel (ACS MIR) on the ExoMars Trace Gas Orbiter. The simultaneity of variations in dust and HCl, and a correlation between water vapour and HCl, led to the proposal of a novel surface-atmosphere coupling analogous to terrestrial HCl production in the troposphere from salt aerosols. After seasonal dust activity restarted in MY 35 (August 2020), we have been monitoring HCl activity to determine whether such a coupling was validated. Here we present a new technique for analyzing the absorption features of trace gases close to the ACS MIR noise level and report that HCl mixing ratios are observed to rapidly increase in both hemispheres coincidentally with the onset of the MY 35 perihelion dust season. We present the temporal evolution of the vertical distribution of HCl (0.1–6 ppbv) and of dust activity in both hemispheres. We also report two observations of > 2 ppbv HCl below 10 km in the northern hemisphere during the aphelion period.
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