A5067065664- Planetary Science and Exploration
- Astro and Planetary Science
- Space Exploration and Technology
- Methane Hydrates and Related Phenomena
- Scientific Research and Discoveries
- Space Science and Extraterrestrial Life
- Geology and Paleoclimatology Research
- Atmospheric and Environmental Gas Dynamics
- Cryospheric studies and observations
- Spaceflight effects on biology
- Atmospheric Ozone and Climate
- Atmospheric chemistry and aerosols
- Marine and environmental studies
- Hydrocarbon exploration and reservoir analysis
- Particle Dynamics in Fluid Flows
- Geological Studies and Exploration
- French Urban and Social Studies
- Gas Dynamics and Kinetic Theory
- Arctic and Antarctic ice dynamics
- Atmospheric aerosols and clouds
Centre National de la Recherche Scientifique
2021-2024
École Normale Supérieure - PSL
2021-2024
Sorbonne Université
2021-2024
Université Paris Sciences et Lettres
2021-2024
École Polytechnique
2021-2024
Institut Pierre-Simon Laplace
2021-2024
Laboratoire de Météorologie Dynamique
2021-2023
Linares Medical Devices (United States)
2023
Universidad de Congreso
2022
Laboratoire atmosphères, milieux, observations spatiales
2021
General introductionThe Mars Climate Database (MCD) is a database of meteorological fields derived from Circulation Model (GCM) numerical simulations the Martian atmosphere using Planetary (PCM) and validated available observational data. The MCD includes complementary post-processing schemes such as high spatial resolution interpolation environmental data means reconstructing variability thereof [1].The latest version MCD, 6.1, was released in December 2022. The PCM (formerly known...
<p class="western" lang="en-US" align="justify"><strong>Introduction:</strong></p> align="justify">The Mars Climate Database (MCD) is a database of meteorological fields derived from General Circulation Model (GCM) numerical simulations the Martian atmosphere and validated using available observational data. The MCD includes complementary post-processing...
Hydrogen chloride was discovered in the atmosphere of Mars for first time during global dust storm year (MY) 34 (July 2018) using Atmospheric Chemistry Suite mid-infrared channel (ACS MIR) on ExoMars Trace Gas Orbiter. The simultaneity variations and HCl, a correlation between water vapour led to proposal novel surface-atmosphere coupling analogous terrestrial HCl production troposphere from salt aerosols. After seasonal activity restarted MY 35 (August 2020), we have been monitoring...
Abstract Observations of the South Polar Residual Cap suggest a possible erosion cap, leading to an increase global mass atmosphere. We test this assumption by making first comparison between Viking 1 and InSight surface pressure data, which were recorded 40 years apart. Such also allows us determine changes in dynamics seasonal ice caps these two periods. To do so, we had recalibrate data because their unexpected sensitivity sensor temperature. Then, design procedure compare distant...
Thermal tides in the Martian atmosphere are analyzed using temperature profiles retrieved from nadir observations obtained by TIRVIM Fourier-spectrometer, part of Atmospheric Chemistry Suite (ACS) onboard ExoMars Trace Gas Orbiter (TGO). The data is selected near northern summer solstice at solar longitude (LS) 75{\deg}-105{\deg} Year (MY) 35. have a full local time coverage, which enables analyses daily anomalies. observed zonal mean lower 4-6K ~100Pa, but higher towards pole, compared to...
Abstract In this paper, the non‐orographic gravity waves (GW) parameterization of Mars Planetary Climate Model (PCM) previously implemented by Gilli et al. (2020, https://doi.org/10.1029/2018JE005873 ) is revisited and extended to exobase (∼250 km). The simulations performed with new scheme correct some known biases in modeled thermal tide amplitudes polar warming, improving agreement Sounder (MCS) observed structures tides below ∼100 km. Additionally, we find that simulated densities above...
Abstract HDO and the D/H ratio are essential to understand Mars past present climate, in particular with regard evolution through ages of Martian water cycle. We here new modeling developments cycle Laboratoire de Météorologie Dynamique Global Climate Model (GCM). The study aims at exploring behavior its sensitivity ice clouds formulation fractionation by condensation. Our GCM simulations compared observations provided Atmospheric Chemistry Suite (ACS) on board ESA/Roscosmos Trace Gas...
Abstract The mid‐infrared channel of the Atmospheric Chemistry Suite (ACS MIR) onboard ExoMars Trace Gas Orbiter is capable observing infrared absorption ozone (O 3 ) in atmosphere Mars. During solar occulations, 003←000 band (3,000‐3,060 cm −1 observed with spectral sampling ∼0.045 . Around equinoxes both hemispheres and over southern winters, we regularly observe around 200–500 ppbv O below 30 km. warm summers, near perihelion, produce enough atmospheric moisture that not detectable at...
Abstract Temperature profiles retrieved using the first set of data Emirates Mars InfraRed Spectrometer obtained during science phase Mission are used for analysis migrating thermal tides in Martian atmosphere. The selected cover a solar longitude ( L S ) range 60°–90° Year 36. novel orbit design Hope Probe leads to good geographic and local time coverage that significantly improves analysis. Wave mode decomposition suggests dominant diurnal tide important semi‐diurnal with maximal...
Abstract The D/H ratio and its implications on the atmospheric escape, make it an essential observable to study current past inventory of water Mars. With arrival Trace Gas Orbiter around Mars, new measurements are now available require tools interpret observations understand HDO cycle. We here present simulations updated version Laboratoire de Météorologie Dynamique Mars Global Climate Model which includes in particular fractionation processes undergoes. compare our model with solar...
Abstract A large number of surface features (e.g., frost, gullies, slope streaks, recurring lineae) are observed on Martian slopes. Their activity is often associated with the specific microclimates these slopes, which have been mostly studied one‐dimensional radiative balance models to date. We develop here a parameterization simulate in 3D Global Climate Models. first demonstrate that any can be thermally represented by poleward or equatorward slope, is, daily average, minimum, and maximum...
Abstract Massive reservoirs of subsurface water ice in equilibrium with atmospheric vapor are found poleward 45° latitude on Mars. The absence CO 2 frost steep pole‐facing slopes and simulations atmospheric‐soil exchanges suggested that could be stable underneath these down to 25° latitude. We revisit arguments a new slope microclimate model. Our model shows below 30° latitude, warmer than previously estimated as the air above is heated by warm surrounding plains. This additional heat...
Introduction: For many years we have been working on the modeling of martian water cycle in Laboratoire de Météorologie Dynamique Global Climate Model [1,2,3,4]. This has challenging because destabilizing feedbacks such as coupling between temperatures, vapour, clouds, and temperature changes induced by radiatively active clouds [2].It is interesting to accurately model Mars’s not only understand present day Mars but also simulate past climate obliquity orbital...
Rural and medium-sized town populations already regularly face the tangible impacts of climate change, particularly in relation to their professional activities. However, they are often overlooked by scientific community when it comes knowledge sharing, even though equally deserve attentive listening consideration. 'Les Sacoches du Climat' (i.e. 'The Climate Panniers') is a French outreach initiative led collective young researchers specializing various fields. The was designed raise...
The Martian atmosphere experiences large diurnal variations due to its small thickness and low heat capacity. Driven by solar insolation influenced topography radiative drivers (clouds dust), temperature changes propagate from lower into higher altitudes as forms of atmospheric tides. However, our understanding in the is poor lack observations, especially those covering entire planet all local times, until recent. In novelly designed high-altitude orbit, instruments onboard Hope probe...
The Mars Planetary Climate Model (PCM)The (Mars PCM, or MPCM) [1] is a Global (GCM) initially developed at the Laboratoire de Météorologie Dynamique [2] that has matured to become community model in collaboration with many teams around world (LATMOS, Instituto Astrofisica Andalucia, UAE University, University of Oxford, Open University), and support ESA (European Space Agency) CNES (French Agency). PCM simulates Martian atmosphere from subsurface exobase includes detailed...
Introduction: The Venus Climate Database (VCD) is a free tool designed to be useful for engineers and scientists in need of reference atmosphere mission planning, observations preparation, analysis interpretation. VCD atmospheric fields are based on outputs from simulations using the Planetary Model (V-PCM) [1,2]. This project funded by European Space Agency, frame EnVision Venus. currently distributed version 2.3.Overview Database: provides mean values statistics main meteorological...
Dust is a key component affecting the radiative budget of Martian atmosphere. In order to achieve accurate numerical modelling weather and climate, it therefore crucial understand dynamics dust storms throughout their whole life cycle, from injection deposition [1]. However, our understanding storm still incomplete simulations cycle come with large uncertainties, especially concerning transport by model winds. The latter are difficult validate, as in-situ or remote-sensing measurements winds...
We present results of diurnal temperature variations and thermal tides in the Martian atmosphere using observations obtained by Emirates Mars InfraRed Spectrometer (EMIRS) onboard Mission (EMM) Hope probe during its primary mission. The novel orbit design spacecraft allows a full geography local time to be covered every 10 days, approximately ~5° solar longitude (LS). Diurnal are derived for first on planetary scale without any significant gaps or interference from seasonal changes....
Abstract Evidence of past liquid water flowing on the surface Mars has been identified since first orbital mission to planet. However, reconstructing climate that would allow at is still an intense area research. Previous studies showed atmosphere composed only CO 2 and H O could not sustain temperatures above freezing point water. Different solutions have studied, ranging from events like impacts different atmospheric compositions, or even radiative feedback clouds create a dramatic...