P092
Phosphine in the Venusian Atmosphere: Observations and Implications I

Friday, 11 December 2020: 10:30-11:30
Virtual
Primary Convener:  Alexander E Thelen, USRA / NASA Goddard Space Flight Center, Greenbelt, MD, United States
Conveners:  David H Grinspoon, Planetary Science Institute, Washington, DC, United States, Colin F Wilson, University of Oxford, Oxford, United Kingdom and Sanjay S Limaye, University of Wisconsin Madison, Madison, WI, United States
Primary Liaison:  Alexander E Thelen, USRA / NASA Goddard Space Flight Center, Greenbelt, MD, United States
Chairs:  Sushil K Atreya, University of Michigan, Ann Arbor, MI, United States and Arielle Moullet, SOFIA/USRA, Moffett Field, CA, United States
OSPA Liaison:  Alexander E Thelen, USRA / NASA Goddard Space Flight Center, Greenbelt, MD, United States
10:30
Observational evidence regarding phosphine on Venus (Invited) (785181)
Jane Greaves, Cardiff University, Cardiff, CF24, United Kingdom
10:34
Evaluating possible sources for phosphine on Venus (Invited) (784774)
William Bains1, Janusz Jurand Petkowski1, Sara Seager2, Sukrit Ranjan3, Clara Sousa-Silva1, Paul Rimmer4, Zhuchang Zhan5, Jane Greaves6 and Anita M. S. Richards7, (1)Massachusetts Institute of Technology, EAPS, Cambridge, MA, United States, (2)Massachusetts Institute of Technology, EAPS, Physics, Aeroastro, Cambridge, MA, United States, (3)Northwestern University, Evanston, United States, (4)University of Cambridge, Department of Earth Sciences, Cambridge, United Kingdom, (5)Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, Cambridge, MA, United States, (6)Cardiff University, Cardiff, CF24, United Kingdom, (7)University of Manchester, Manchester, United Kingdom
10:38
The Venus Lower Atmosphere Haze as a Depot for Desiccated Microbial Life (Invited) (785384)
Sara Seager, Massachusetts Institute of Technology, EAPS, Physics, Aeroastro, Cambridge, MA, United States, Janusz Jurand Petkowski, Massachusetts Institute of Technology, EAPS, Cambridge, MA, United States, Peter Gao, California Institute of Technology, Pasadena, CA, United States; University of California Santa Cruz, Astronomy, Santa Cruz, CA, United States, William Bains, Rufus Scientific, Melbourn, United Kingdom, Noelle C. Bryan, Massachusetts Institute of Technology, Department of Earth, Atmospheric and Planetary Sciences, Boston, MA, United States, Sukrit Ranjan, Northwestern University, Evanston, United States and Jane Greaves, Cardiff University, Cardiff, CF24, United Kingdom
10:42
Challenges to the retrieval of PH3 from ALMA & JCMT observations (Invited) (785289)
Geronimo Villanueva1, M Cordiner1, Patrick GJ Irwin2, Imke De Pater3, Bryan J Butler4, Mark A Gurwell5, Stefanie N Milam1, Conor A Nixon1, Statia Luszcz-Cook6, Colin F Wilson7, Vincent Kofman8, Giuliano Liuzzi8, Sara Faggi9, Thomas Fauchez10, Manuela Lippi9, Richard Cosentino11, Alexander E Thelen10, Arielle Moullet12, Paul Hartogh13, Edward Mischel Molter14, Steven B Charnley1, Giada N Arney1, Avi Mandell1, Nicolas Biver15, Ann Carine Vandaele16, Katherine de Kleer17 and Ravi Kopparapu18, (1)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (2)University of Oxford, Oxford, United Kingdom, (3)Univ California Berkeley, Berkeley, CA, United States, (4)National Radio Astronomy Observatory, Socorro, NM, United States, (5)Smithsonian Astrophysical Obs., Cambridge, MA, United States, (6)Columbia University, New York, United States, (7)Univ Oxford, Oxford, United Kingdom, (8)AU / NASA Goddard Space Flight Center, Greenbelt, United States, (9)AU / NASA Goddard Space Flight Center, Greenbelt, MD, United States, (10)USRA / NASA Goddard Space Flight Center, Greenbelt, MD, United States, (11)UMD / NASA Goddard Space Flight Center, Greenbelt, MD, United States, (12)SOFIA/USRA, Moffett Field, CA, United States, (13)MPI for Solar System Research, Katlenburg-Lindau, Germany, (14)University of California, Berkeley, Berkeley, CA, United States, (15)Observatoire de Paris, Paris, France, (16)Royal Belgian Institute for Space Aeronomy, Brussels, Belgium, (17)California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, CA, United States, (18)NASA Goddard Space Flight Center, Solar System Exploration Division, Greenbelt, MD, United States
10:46
A Stringent Upper Limit of the PH3 Abundance at the Cloud Top of Venus (Invited) (784496)
Therese Encrenaz, LESIA Observatoire de Paris, Meudon, France, Thomas K Greathouse, Southwest Research Institute, San Antonio, TX, United States, Emmanuel Marcq, University of Versailles Saint-Quentin en Yvelines, Versailles, France, Thomas Widemann, Paris Observatory, Meudon, France, Bruno Bezard, Observatoire de Paris, LESIA, Meudon, France, Thierry Fouchet, LESIA, Observatoire de Paris, Meudon, France, Rohini Giles, Southwest Research Institute, San Antonio, United States, Hideo Sagawa, Kyoto Sangyo University, Kyoto, Japan, Jane Greaves, Cardiff University, Cardiff, CF24, United Kingdom and Clara Sousa-Silva, Massachusetts Institute of Technology, EAPS, Cambridge, MA, United States
10:50
Search for phosphine in Venus’ atmosphere using Infrared instruments (Invited) (784899)
Séverine Robert1,2, Loïc Trompet1, Arnaud Mahieux1,3, Frédéric Schmidt4, Justin Erwin1 and Ann Carine Vandaele1, (1)Royal Belgian Insitute for Space Aeronomy, Brussels, Belgium, (2)Université Catholique de Louvain, Louvain-La-Neuve, Belgium, (3)University of Texas at Austin, Austin, United States, (4)Université Paris-Saclay, Orsay, France
10:54
Venus’ Mass Spectra Show Signs of Disequilibria in the Middle Clouds (Invited) (785295)
Rakesh Mogul, California State Polytechnic University Pomona, Chemistry & Biochemistry Department, Pomona, CA, United States, Sanjay S Limaye, University of Wisconsin Madison, Madison, WI, United States, Michael Way, NASA Goddard Institute for Space Studies, New York, NY, United States and Richard R. Hodges Jr., Laboratory for Atmospheric and Space Physics, Boulder, United States
10:58
Discussion
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