A5015480183- Atmospheric Ozone and Climate
- Atmospheric and Environmental Gas Dynamics
- Atmospheric chemistry and aerosols
- Spectroscopy and Laser Applications
- Calibration and Measurement Techniques
- Ionosphere and magnetosphere dynamics
- Air Quality Monitoring and Forecasting
- Infrared Target Detection Methodologies
- Atmospheric aerosols and clouds
- Geochemistry and Geologic Mapping
- Lightning and Electromagnetic Phenomena
- Geophysics and Gravity Measurements
- Aerospace Engineering and Energy Systems
- Spacecraft and Cryogenic Technologies
- Impact of Light on Environment and Health
- Air Quality and Health Impacts
- Hydrocarbon exploration and reservoir analysis
- Meteorological Phenomena and Simulations
- Spacecraft Design and Technology
- Solar and Space Plasma Dynamics
- Methane Hydrates and Related Phenomena
- Remote-Sensing Image Classification
- Vehicle emissions and performance
- Spectroscopy and Chemometric Analyses
- Scientific Research and Discoveries
Laboratoire atmosphères, milieux, observations spatiales
2016-2025
Université de Versailles Saint-Quentin-en-Yvelines
2013-2025
Institut Pierre-Simon Laplace
2013-2025
Sorbonne Université
2016-2025
Centre National de la Recherche Scientifique
2014-2025
Université Paris-Saclay
2025
Atmosphere Systems and Services
2024
Université Clermont Auvergne
2021
UPMC Health System
2013
Laboratoire d’Etudes du Rayonnement et de la Matière en Astrophysique et Atmosphères
2003-2012
The Infrared Atmospheric Sounding Interferometer (IASI) forms the main infrared sounding component of European Organisation for Exploitation Meteorological Satellites's (EUMETSAT's) Operation (MetOp)-A satellite (Klaes et al. 2007), which was launched in October 2006. This article presents results first 4 yr operational IASI mission. performance instrument is shown to be exceptional terms calibration and stability. quality data has allowed rapid use observations numerical weather prediction...
The MEthane Remote sensing Lidar missioN (MERLIN) aims at demonstrating the spaceborne active measurement of atmospheric methane, a potent greenhouse gas, based on an Integrated Path Differential Absorption (IPDA) nadir-viewing LIght Detecting and Ranging (Lidar) instrument. MERLIN is joint French German space mission, with launch currently scheduled for timeframe 2021/22. Space Agency (DLR) responsible payload, while platform (MYRIADE Evolutions product line) developed by (CNES). main...
Abstract. Besides their strong contribution to weather forecast improvement through data assimilation, thermal infrared sounders onboard polar-orbiting platforms are now playing a key role for monitoring atmospheric composition changes. The Infrared Atmospheric Sounding Interferometer (IASI) instrument developed by the French space agency (CNES) and launched EUMETSAT Metop satellite series is providing essential inputs forecasting pollution/climate owing its smart combination of large...
Abstract. Although the global methane (CH4) concentration has more than doubled since pre-industrial times, local emission sources are still poorly identified and quantified. Instruments onboard satellites can improve our knowledge about distribution owing to their very good spatial coverage. The IASI (Infrared Atmospheric Sounding Interferometer) instrument launched on European MetOp-A platform is a Fourier transform spectrometer which measures thermal infrared radiation emitted by Earth...
In the Arctic winter 1998/99, two balloon payloads were launched in a co‐ordinated study of stratospheric bromine. Vertical profiles (9–28 km) all known major organic Br species (CH 3 Br, C 2 H 5 CH BrCl, CHBrCl , CHBr Cl, H1301, H1211, H2402, and H1202) measured, total (henceforth called y org ) originating from these precursors was inferred as function altitude. This compared with inorganic reactive derived spectroscopic BrO observations, after accounting for modeled partitioning. Within...
Abstract. The ENVISAT validation programme for the atmospheric instruments MIPAS, SCIAMACHY and GOMOS is based on a number of balloon-borne, aircraft, satellite ground-based correlative measurements. In particular activities scientists were coordinated by ESA within Stratospheric Aircraft Balloon Campaign or ESABC. As part series similar papers other species [this issue] in parallel to contribution individual teams, present paper provides synthesis comparisons performed between MIPAS CH4 N2O...
The consequences of global change on the Earth system are multiple such as increase in air temperature and sea level, stronger weather events, impacts ecosystem biodiversity natural hazards. But detection changes is still difficult because diversity variability environments (oceans, land surfaces, atmosphere, solid Earth). While there has been a clear number environmental observations, whether by in situ, laboratory or remote sensing measurements, each data both costly to acquire...
Onboard of MetOp satellite series, Infrared Atmospheric Sounding Interferometer (IASI) is a Fourier Transform spectrometer based on the Michelson interferometer. IASI acquires interferograms from which high-resolution atmospheric emission spectra are provided, enabling derivation temperature and humidity profiles (among other parameters) with exceptional spectral resolution. In this study, we will use archive to evaluate retrieval approach in interferogram domain, anticipate be well-suited...
Data Terra is a research E-Infrastructure in the field of Earth systems and environment. Observing, understanding modelling system an integrated manner as it undergoes global change fundamental challenge necessity for many environmental socio-economic applications. Accessing, processing combining these data dynamic essential addressing societal issues.The main challenges facing infrastructures to maintain their performance include sustaining  place, well effective governance models...
Abstract. Stratospheric O3 and NO2 abundances measured by different remote sensing instruments are inter-compared: (1) Line-of-sight absorptions vertical profiles inferred from solar spectra in the ultra-violet (UV), visible infrared (IR) wavelength ranges LPMA/DOAS (Limb Profile Monitor of Atmosphere/Differential Optical Absorption Spectroscopy) balloon payload during ascent/descent occultation examined with respect to internal consistency. (2) The borne stratospheric compared collocated...
Stratospheric BrO was spectroscopically monitored by its UV absorption in direct sunlight on 8 balloon flights that were conducted at middle and high latitudes 1996 through 2000 [e.g., Ferlemann et al., 1998, 2000]. For conditions where detailed photochemical model calculations [ Chipperfield , 1999] correctly predict other measured chemical (e.g., NO 2 O 3 ) dynamical (e.g. N O, F12, cetera) tracers, the total stratospheric bromine (organic inorganic) amount (Br y is inferred. An excellent...
The Improved Limb Atmospheric Spectrometer (ILAS) on board the Advanced Earth Observing Satellite (ADEOS) measured nitrogen dioxide (NO 2 ) and nitric acid (HNO 3 profiles from November 1996 to June 1997 at high latitudes in both hemispheres. ILAS NO (version 5.20) are compared with those obtained by balloon‐borne satellite measurements validate data. Comparisons indicate that 25–30 km has a positive bias of 0.3–0.4 ppbv (6–11%). random difference is 0.2–0.3 (3–9%). error larger than 100%...
Coincident vertical profiles of HCl and ClONO 2 in the Arctic vortex have been retrieved simultaneously altitude range 13 to 31km. Solar occultation spectra were recorded, during both ascent occultation, with a balloon‐borne infrared Fourier transform spectrometer launched on 22 March 1995 from Kiruna (Sweden, 67°N, 22°E). A depleted layer is observed between 16 18 km, whereas showing values larger than ppbv around 20 km. The impact derived total inorganic chlorine 20% increase current...
Vertical profiles of ozone concentration in the high latitudes were observed by Improved Limb Atmospheric Spectrometer (ILAS) aboard Advanced Earth Observing Satellite (ADEOS) from November 1996 to June 1997. The data obtained version 5.20 ILAS retrieval algorithm are compared with those 19 Halogen Occultation Experiment (HALOE), 6 Stratospheric Aerosol and Gas (SAGE) II, Polar Ozone Measurement (POAM) II algorithms. also measured ozonesondes, instruments on board balloons or an aircraft,...
Vertical profiles of water vapor concentration at high latitudes (57–72°N; 64–89°S) were observed by the Improved Limb Atmospheric Spectrometer (ILAS) solar occultation sensor aboard Advanced Earth Observing Satellite (ADEOS). These measurements made continuously from November 1996 through June 1997 with some additional periods in September to October 1996. A validation study data processed version 5.20 ILAS retrieval algorithm is presented this paper. Uncertainty and general characteristics...
The high-resolution atmospheric spectra recorded by the Interferometric Monitor for Greenhouse gases instrument on ADvanced Earth Observing System (IMG/ADEOS) in June, 1997, were analyzed two different and complementary inversion algorithms to retrieve CO total columns. Spectral fits of high quality obtained using a global fit algorithm selected cloud-free measurements. Global distribution maps fast neural network retrieval are compared results provided current chemistry-transport models....
Recent theories of solid polar stratospheric clouds (PSCs) formation have shown that particles could remain liquid down to 3 K or 4 below the ice frost point. Such temperatures are rarely reached in Arctic stratosphere at synoptic scale, but nevertheless, PSCs frequently observed. Mesoscale processes such as mountain‐induced gravity waves be responsible for their formation. In this paper, a microphysical‐chemical Lagrangian model (MiPLaSMO) and mountain wave (NRL/MWFM) used interpret...
NO 2 mixing ratio profiles were measured at sunset between 14 and 30 km using the Limb Profile Monitor of Atmosphere (LPMA) experiment during night 13 31 Absorption par Minoritaires Ozone et x (AMON) inside Arctic vortex, both on February 26, 1997. Coinciding by Improved Atmospheric Spectrometer (ILAS) instrument board ADEOS have been used to check consistency satellite balloon for , O 3 HNO . A box model has photochemical correction LPMA sunset. The resulting balloon‐borne AMON are compared...
The Improved Limb Atmospheric Spectrometer (ILAS), a solar occultation infrared satellite sensor, was launched in August 1996. ILAS validation balloon campaigns were carried out from Kiruna, Sweden (68°N, 21°E), February and March 1997 Fairbanks, Alaska (65°N, 148°W), April May 1997. During these campaigns, measurements of nitric acid (HNO 3 ) made using emission spectrometers (Cold Emission Spectral Radiometer, Michelson Interferometer for Passive Sounding‐Balloon‐Borne version 2,...
Vertical profiles of nitrous oxide and methane at high latitudes (57–72°N; 64–89°S) were observed by the Improved Limb Atmospheric Spectrometer (ILAS) solar occultation sensor aboard Advanced Earth Observing Satellite. These measurements made continuously from November 1996 through June 1997 with some additional periods in September–October 1996. A validation study data processed Version 5.20 ILAS retrieval algorithm is presented this paper. Comparisons are (1) obtained balloon campaigns...
Four inversion schemes based on various retrieval approaches (digital gas correlation, nonlinear least squares, global fit adjustment, and neural networks) developed to retrieve CO from nadir radiances measured by such downward-looking satelliteborne instruments as the Measurement of Pollution in Troposphere (MOPITT), Tropospheric Emission Spectrometer (TES), Infrared Atmospheric Sounding Interferometer (IASI) were compared both for simulated cases atmospheric spectra recorded...
Laboratoire de Physique Moléculaire et Applications (LPMA)/Infrared Atmospheric Sounding interferometer (IASI) balloon is a calibrated infrared Fourier transform spectrometer that used to measure the Earth's atmospheric emission (650-3000 cm(-1)). Operating under stratospheric balloon, this spectroradiometer provides radiometrically spectra with an apodized spectral resolution of 0.1 cm(-1), which can be retrieve concentration trace gases such as H2O, CO2, CO, O3, N2O, and CH4. The...