Laboratoire atmosphères et observations spatiales | LATMOS

• Article dans une revue

Study of the spatial sensitivity of the VenSpec-U spectral imager onboard EnVision using an instrumental model

Lucile Conan, Emmanuel Marcq, Benjamin Lustrement, Maxence Lefèvre, Nicolas Rouanet, Baptiste Leduc, Abraham Diaz Damian, Lucio Baggio, Sandrine Bertran, Séverine Robert, Océane Barraud, Giulia Alemanno

The VenSpec-U spectrometer onboard EnVision will be dedicated to the study of Venus' upper atmosphere, with four main science goals: monitoring the sulfured species SO 2 and SO, the UV absorber, and performing observations of the cloud-top with a high spatial resolution thanks to a pushbroom…

Planetary and Space Science, 2026, 283, pp.106344. ⟨10.1016/j.pss.2026.106344⟩. ⟨hal-05755126⟩

• Communication dans un congrès

W-band Doppler radar observations of a prescribed fire smoke plume: the EUBURN-FLAMEX 2026 campaign

Franck Donnadieu, Adrien Guyot, Julien Delanoë, Frédéric Peyrin

As climate change increases the frequency, severity, and spatial extent of wildfires, a better understanding of fire dynamics and their environmental consequences is needed. Ground-based radar systems have emerged as a powerful tool for monitoring wildfire smoke, addressing critical challenges in…

10th International Conference on Forest Fire Research, Oct 2026, Coimbra, Portugal. ⟨hal-05744223⟩

• Article dans une revue

Oxidation of Photochemical Organic Hazes: A Prebiotic Source of Oxygen-Bearing Organics in Titan’s Atmosphere and Early Earth?

Louis Maratrat, Maëva Millan, Valentin Moulay, Ludovic Vettier, Alex Abello, Caroline Freissinet, Nathalie Carrasco

Photochemical organic hazes such as those found in the atmosphere of Titan, the largest satellite of Saturn, are mainly composed of reduced chemical components. However, in these predominantly reduced atmospheres favorable to the formation of hazes, oxidized species can be produced transiently by…

Astrobiology, 2026, ⟨10.1177/15311074261493349⟩. ⟨insu-05776820⟩

• Article dans une revue

Revisiting the CO₂ stability problem of the Martian atmosphere with a three-dimensional climate-photochemistry model

Yangcheng Luo, François Forget, Franck Lefèvre

The stability of Mars's CO₂-dominated atmosphere remains incompletely understood because traditional one-dimensional photochemical models underestimate atmospheric CO mixing ratios by up to a factor of seven. Here we present the first long-term three-dimensional…