The Venus Emissivity Mapper (VEM): Obtaining global mineralogy of Venus from orbit

Jorn Helbert 1 Melinda Dyar 2 Ingo Walter 3 Dennis Wendler 4 Thomas Widemann 5 Emmanuel Marcq 6 Gabriel Guignan 7 Sabrina Ferrari 8 Alessandro Maturilli 4 Nils Mueller 9 David Kappel 4 Judit Jaenchen 10 Mario d'Amore 4 Anko Boerner 10 Constantine Tsang 9 Gabriele E. Arnold 10 Suzanne Smrekar 11
1 DLR Institute of Planetary Research
2 Mount Holyoke College
3 DLR Institute for Optical Sensorsystems
4 DLR Institut für Planetenforschung
5 LESIA (UMR_8109) - Laboratoire d'études spatiales et d'instrumentation en astrophysique
6 IMPEC - LATMOS
LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales
7 LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales
8 Università di Pavia
9 SwRI - Southwest Research Institute [Boulder]
10 DLR - Deutsches Zentrum für Luft- und Raumfahrt
11 JPL - Jet Propulsion Laboratory
Abstract : The Venus Emissivity Mapper is the first flight instrument designed with a focus on mapping the surface of Venus using atmospheric windows around 1 μm. After several years of development VEM has a mature design with an existing laboratory prototype verifying an achievable instrument SNR of well above 1000 as well as a predicted error in the retrieval of relative emissivity of better than 1%. With that it will provide a global map of surface composition as well as redox state of the surface by observing the surface with six narrow band filters, ranging from 0.86 to 1.18 μm. Continuous observation of Venus' thermal emission will place tight constraints on current day volcanic activity. Eight additional channels provide measurements of atmospheric water vapor abundance as well as cloud microphysics and dynamics and permit accurate correction of atmospheric interference on the surface data. A mission combining VEM with a high-resolution radar mapper such as the ESA EnVision or NASA VERITAS mission proposals will provide key insights in the divergent evolution of Venus.
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Conference papers
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https://hal-insu.archives-ouvertes.fr/insu-01879203
Contributor : Catherine Cardon <>
Submitted on : Saturday, September 22, 2018 - 3:33:35 PM
Last modification on : Friday, January 10, 2020 - 3:42:35 PM

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INSU | UPMC | LATMOS | CNRS | UVSQ | PSL | OBSPM | UNIV-PARIS-SACLAY | SORBONNE-UNIVERSITE | LESIA | UNIV-PARIS7 | USPC | SU-SCIENCES

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Jorn Helbert, Melinda Dyar, Ingo Walter, Dennis Wendler, Thomas Widemann, et al.. The Venus Emissivity Mapper (VEM): Obtaining global mineralogy of Venus from orbit. Infrared Remote Sensing and Instrumentation XXVI, Aug 2018, San Diego, United States. pp.art. 107650D, ⟨10.1117/12.2320112⟩. ⟨insu-01879203⟩

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