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Your search keyword '"Montmessin, Franck"' showing total 12 results
12 results on '"Montmessin, Franck"'

1. The SuperCam infrared spectrometer for the perseverance rover of the Mars2020 mission

Author

Fouchet, Thierry, Reess, Jean-Michel, Montmessin, Franck, Hassen-Khodja, Rafik, Nguyen-Tuong, Napoléon, Humeau, Olivier, Jacquinod, Sophie, Lapauw, Laurent, Parisot, Jérôme, Bonafous, Marion, Bernardi, Pernelle, Chapron, Frédéric, Jeanneau, Alexandre, Collin, Claude, Zeganadin, Didier, Nibert, Patricia, Abbaki, Sadok, Montaron, Christophe, Blanchard, Cyrille, Arslanyan, Vartan, Achelhi, Ourdya, Colon, Claudine, Royer, Clément, Hamm, Vincent, Beuzit, Mehdi, Poulet, François, Pilorget, Cédric, Mandon, Lucia, Forni, Olivier, Cousin, Agnès, Gasnault, Olivier, Pilleri, Paolo, Dubois, Bruno, Quantin, Cathy, Beck, Pierre, Beyssac, Olivier, Le Mouélic, Stéphane, Johnsson, Jeffrey R., McConnochie, Timothy H., Maurice, Sylvestre, and Wiens, Roger C.

Published
2022
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8. The thermal structure of the Venus atmosphere: Intercomparison of Venus Express and ground based observations of vertical temperature and density profiles

Author

Limaye, Sanjay S., Lebonnois, Sebastien, Mahieux, Arnaud, Pätzold, Martin, Bougher, Steven, Bruinsma, Sean, Chamberlain, Sarah, Clancy, R. Todd, Gérard, Jean-Claude, Gilli, Gabriella, Grassi, Davide, Haus, Rainer, Herrmann, Maren, Imamura, Takeshi, Kohler, Erika, Krause, Pia, Migliorini, Alessandra, Montmessin, Franck, Pere, Christophe, Persson, Moa, Piccialli, Arianna, Rengel, Miriam, Rodin, Alexander, Sandor, Brad, Sornig, Manuela, Svedhem, Håkan, Tellmann, Silvia, Tanga, Paolo, Vandaele, Ann C., Widemann, Thomas, Wilson, Colin F., Müller-Wodarg, Ingo, and Zasova, Ludmila

Published
2017
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12. Discovery of cloud top ozone on Venus.

Author

Marcq, Emmanuel, Baggio, Lucio, Lefèvre, Franck, Stolzenbach, Aurélien, Montmessin, Franck, Belyaev, Denis, Korablev, Oleg, and Bertaux, Jean-Loup

Subjects
*VENUSIAN atmosphere, *ATMOSPHERIC ozone, *PHOTOCHEMICAL research, *ULTRAVIOLET radiation, *ASTRONOMICAL observations
Abstract

Highlights • First detection of cloud top ozone in Venus atmosphere (about 1000 times less than Earth). • Ozone presence is restricted to high latitudes (polewards of 50°) in both hemispheres. • Measurements are qualitatively supported by our 3D photochemical model. Abstract After the first sporadic detections of an ozone (O 3) nighttime layer in the 90–100 km altitude range (Montmessin et al., 2011), we report here the discovery of another, permanent ozone layer on Venus, restricted to high latitudes (polewards of 50° both N and S) and located at the upper cloud level near 70 km. This detection was performed during a reanalysis of the whole SPICAV-UV nadir dataset through UV absorption near 250 nm in the backscattered solar light. The O 3 volume mixing ratio peaks in the 10–20 ppbv range, yielding observable column densities in the 0.1–0.5 Dobson units (DU), comparable to nominal values on Mars but much smaller than for Earth (∼ 300 DU). These measurements are supported by our 3D-photochemical model coupled with the LMD-IPSL GCM (Lebonnois et al., 2010), which indicates that the ozone layer identified by SPICAV results from downward transport of O 2 (∼ 50 ppmv) molecules over the poles by the mean meridional circulation. Our findings do not contradict previous upper limits (< 2 ppmv) based on O 2 measurements (Mills, 1999), since they were restricted to lower latitudes only. [ABSTRACT FROM AUTHOR]

Published
2019
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