Laboratoire de météorologie dynamique | LMD

• Article dans une revue

Not enough H₂O₂ to warm early Mars

Maxime Maurice, François Forget, Franck Lefèvre, Aurélien Stolzenbach, A. Yassin Jaziri, Ashwin S Braude, Martin Turbet, Ehouarn Millour, Yangcheng Luo

There exists strong geomorphological, sedimentary and mineralogical evidence that Mars had an active surface hydrological cycle during the Noachian period, about 3.8 Gyr ago (Ga). However, how surface temperatures compatible with perennial liquid water could be sustained in spite of a Sun that only…

• Article dans une revue

Simultaneous estimation of radiance and its sensitivities to radiative properties in a spherical-heterogeneous atmospheric radiative transfer model by Monte Carlo method: Application to Titan

Zili He, Sandrine Vinatier, Vincent Eymet, Vincent Forest, Bruno Bézard, Pascal Rannou, Sébastien Rodriguez, Emmanuel Marcq, Richard Fournier, Stéphane Blanco, Nada Mourtaday, Yaniss Nyffenegger-Péré, Sébastien Lebonnois, Anni Määttänen

<div><p>We propose a control variates technique to reduce the variance of null-collision Monte Carlo algorithms used for solving the Radiative Transfer Equation (RTE) in highly heterogeneous media. The method complements the classical spatially partitioned overestimate approach by…

Journal of Quantitative Spectroscopy and Radiative Transfer, 2026, 350, pp.109722. ⟨10.1016/j.jqsrt.2025.109722⟩. ⟨hal-05370209⟩

• Pré-publication, Document de travail

Accounting for exposure in 3D spatiotemporally contiguous heatwaves in Europe 1975-2024

Lou Mandonnet, Aglaé Jézéquel, Fabio d'Andrea, Améline Vallet

Heatwaves are becoming more common, intense, and widespread as climate change accelerates, increasing their effects on infrastructure, economies, and health. However, heatwaves' material and human effects cannot be adequately captured by their meteorological characteristics alone. In order to…

2026. ⟨hal-05495839⟩

• Article dans une revue

A complete list of He-pressure-broadening coefficient of CO2 lines from 100 K to 3000 K for planet and exoplanet opacity calculations

Faten Hendaoui, Jean-Michel Hartmann, Hassen Aroui, Ha Tran

He pressure-broadening coefficients of CO 2 lines were predicted over a wide temperature range (100-3000 K) using requantized classical molecular dynamics simulations (rCMDS). This approach, based on the use of an ab initio intermolecular interaction potential, Newtonian equations of motion, and a…

Icarus, 2026, 445, pp.116861. ⟨10.1016/j.icarus.2025.116861⟩. ⟨hal-05472342⟩