Preparing EnVision: SO₂ measurements below and above Venus' clouds

Emmanuel Marcq (1) , K. L. Jessup (2) , Thérèse Encrenaz (3) , Lucio Baggio (1) , Ismaïl Amine (1) , Marc Duquesnoy (1) , Franck Montmessin (1) , Franck Lefèvre (1) , Jean-Loup Bertaux (1) , A. C. Vandaele (4) , S. Robert (4) , J. Helbert (5) , T. Widemann (3) , C. Wilson (6) , R. Ghail (7)

1 PLANETO - LATMOS
2 SwRI - Southwest Research Institute [Boulder]
3 LESIA (UMR_8109) - Laboratoire d'études spatiales et d'instrumentation en astrophysique
4 BIRA-IASB - Belgian Institute for Space Aeronomy / Institut d'Aéronomie Spatiale de Belgique
5 DLR Institut für Planetenforschung
6 AOPP - Department of Atmospheric, Oceanic and Planetary Physics [Oxford]
7 RHUL - Royal Holloway [University of London]

One of the primary objectives of the preselected En-Vision M5 proposal is the monitoring of volcanogenicspecies in Venus’ atmosphere, one of the most promi-nent being sulphur dioxide (SO2). Monitoring SO2below the clouds can be performed on the night-side near2.4μm, and is one science objective of theVenSpec-H channel (P.I.: A. C. Vandaele, BIRA) on-board EnVision. Monitoring SO2above the cloudscan be performed on the dayside in the200-300 nmrange, and is the main science objective of theVenSpec-U channel (P.I.: E. Marcq, LATMOS). Herewe present the analysis of two analogous datasets,namely IRTF/iSHELL ground based observations onthe nightside of Venus, and the most recent reanalay-sis of the Venus Express/SPICAV-UV dataset on thedayside of Venus

Domains: Sciences of the Universe [physics]

Emmanuel Marcq, K. L. Jessup, Thérèse Encrenaz, Lucio Baggio, Ismaïl Amine, et al.. Preparing EnVision: SO₂ measurements below and above Venus' clouds. EPSC-DPS Joint Meeting 2019, Sep 2019, Geneva, Switzerland. pp.EPSC-DPS2019-253-1. ⟨insu-02262580⟩