Jérôme Bureau

Sorbonne Université

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Sébastien Payan

Laboratoire atmosphères, milieux, observations spatiales

C. Camy‐Peyret

Sorbonne Université

Nathalie Huret

Centre National de la Recherche Scientifique

Rémi Thiéblemont

Bureau de Recherches Géologiques et Minières

Olivier Lezeaux

Institut Pierre-Simon Laplace

Alain Hauchecorne

Centre National de la Recherche Scientifique

Fabrice Duruisseau

Centre National de la Recherche Scientifique

Yao Té

Sorbonne Université

Sébastien Payen

Parion Sciences (United States)

Emmanuel Dufour

Noveltis (France)

Cooperative Institutions

Centre National de la Recherche Scientifique

Sorbonne Université

Institut Pierre-Simon Laplace

Laboratoire atmosphères, milieux, observations spatiales

Université de Versailles Saint-Quentin-en-Yvelines

Université Paris-Saclay

Université Paris Cité

Laboratoire d’Etudes du Rayonnement et de la Matière en Astrophysique et Atmosphères

Royal Belgian Institute for Space Aeronomy

Laboratoire de Physique et Chimie de l’Environnement et de l’Espace

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Feasibility of high altitudes luminous events study by infrared spectro-imagery embedded in a stratospheric balloon

L. Croizé Sébastien Payan Jérôme Bureau Fabrice Duruisseau Nathalie Huret

HALESIS (High Altitude Luminous Events Studied by Infrared Spectro-imagery) is an innovative project based on hyperspectral imagery. The purpose of this experience is to measure the atmospheric perturbation in the minutes following the occurrence of Transient Luminous Events (TLEs) from a stratospheric balloon in the altitude range of 20 to 40 km. We present the preliminary study that has established the feasibility of the project.

10.1109/whispers.2013.8080670

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A first comparison of IASI and GOSAT measurements in the thermal infrared

AGU Fall Meeting Abstracts (2011)

Jérôme Bureau François Cochard Quentin Rodier Sébastien Payan C. Camy‐Peyret

Thermal infrared

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VAMDC : The Virtual Atomic and Molecular Data Centre: a Service Orientated Data Infrastructure for e- Research

N. J. Mason Marie-Lise Dubernet K. Benson Jérôme Bureau U. Heiter

VAMDC : The Virtual Atomic and Molecular Data Centre: a Service Orientated Data Infrastructure for e- Research

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The Measurement of the Solar Spectral Irradiance Variability during the Solar Cycle 24 using SOLAR/SOLSPEC on ISS

European geosciences union general assembly (2016)

David Bolsée Nuno Pereira Praveen Pandey Gaël Cessateur D. Gillotay

Since April 2008, SOLAR/SOLSPEC measures the Solar Spectral Irradiance (SSI) from 166 nm to 3088 nm. The instrument is a part of the Solar Monitoring Observatory (SOLAR) payload, externally mounted on the Columbus module of the International Space Station. As the SSI is a key input for the validation of solar physics models, together with playing a role in the climate system and photochemistry of the Earth atmosphere, SOLAR/SOLSPEC spectral measurements becomes important. In this study, the in-flight operations and performances of the instru- ment -including the engineering corrections- will be presented for seven years of the SOLAR mission. Following an accurate absolute calibration, the SSI variability in the UV as measured by SOLAR/SOLSPEC in the course of the solar cycle 24 will be presented and compared to other instruments. The accuracy of these measurements will be also discussed here.

Payload (computing)

Solar cycle 24

Solar maximum

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Comparison of Retrievals of CH4 and CO2 from IASI and GOSAT in the TIR for Nearly Coincident Measurements in the Arctic Summer

HAL (Le Centre pour la Communication Scientifique Directe) (2014)

Jérôme Bureau C. Camy‐Peyret Sébastien Payen

The comparison of different thermal infrared (TIR) nadir sounders is quite important for assessing their capabilities to retrieve reliable information on the concentration of greenhouse gases. However, the present satellite instruments able to provide such information are not many. While IASI (on MetOp) and AIRS (on Aqua) have been compared in the Simultaneous Nadir Observation (or SNO) configuration, this has not been attempted for IASI and TANSO‐FTS (on GOSAT). We have selected two periods from mid‐July to mid‐September in the high latitude polar region during polar summer when it is possible to observe almost coincident or superimposed footprints (IFOV) of the two infrared sounders considered in this study. These coincidences could be called Simultaneous Off‐Nadir Observations (or SONO). This has been performed for two years i.e. 2010 and 2013. This latter year has been selected because IASI CH4 level 2 (L2) products for this period are now available and also because both IASI‐A and IASI‐B were operational in 2013. The summer period was chosen because of ice free waters (in the latitude band 70N to 80N) over which retrieval are less sensitive to surface inhomogeneities over land. The inversion configuration will be described and the XCH4 and XCO2 (column average mixing ratio) will be compared in addition to the sea surface temperature Tsurf used as a control variable. The retrieved values will be compared to the L2 products available from Eumetsat for CH4 and NIES for CH4 and CO2. The retrieved sea surface temperature will also provide an additional check of the performances of the retrievals. The possibility to retrieve information on other greenhouse species (N2O, CFCs) will be discussed. These results are interesting starting points for preparing the future mission IASI‐NG on MetOP‐SG as well as GOSAT‐2.

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Validation and retrieval of IASI measurements with IASI-balloon correlative measurements

HAL (Le Centre pour la Communication Scientifique Directe) (2010)

Sébastien Payan C. Camy‐Peyret M. Pondrom Yao Té Pascal Jeseck

Correlative

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Characterization of Tropical Tropopause Layer clouds combining balloon-borne and space-borne observations

Thomas Lesigne François Ravetta Aurélien Podglajen Dung Tran Jérôme Bureau

Tropical Tropopause Layer clouds have a significant impact on the Earth's radiative budget and regulate the amount of water vapor entering the stratosphere. They are a key component of the climate system but their observation is still challenging. The Strateole-2 project aims at a  better understanding of dynamical, transport, and processes in the Tropical Tropopause Layer (TTL) using long-duration super-pressure balloons flying for several months in the lower stratosphere along the equator belt. From October 2021 to late January 2022, three microlidars flew onboard stratospheric balloons, slowly drifting just a few kilometers above the clouds. These observations have unprecedented sensitivity to thin cirrus and provide a fine scale description of cloudy structures both in time and space. Statistical comparisons with spaceborne lidar CALIOP are discussed, highlighting the unique ability of the microlidar to detect optically thin clouds. The modulation of outgoing longwave radiation by tropical clouds is also investigated using the balloon-borne observations. 

Cirrus

Tropopause

Longwave

10.5194/egusphere-egu23-7035

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The Molecular Universe, Posters from the proceedings of the 280th Symposium of the International Astronomical Union held in Toledo. BASECOL and VAMDC: A new way to access and manipulate molecular collisional data for interstellar applications. (presented by F. Daniel)

HAL (Le Centre pour la Communication Scientifique Directe) (2011)

F. Daniel Marie-Lise Dubernet M. Doronin L. Nenadovic Jérôme Bureau

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A new reference state and climatology of O3, N2O, CH4 and HNO3 in the summer stratosphere

AGU Fall Meeting Abstracts (2011)

Sébastien Payan Jérôme Bureau Rémi Thiéblemont Fabrice Jégou C. Camy‐Peyret

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Comparison of IASI-A and IASI-B L1C data on the MetOp satellites: monitoring of radiometric and spectral performances and possible use for climate studies

HAL (Le Centre pour la Communication Scientifique Directe) (2013)

C. Camy‐Peyret Jérôme Bureau Dorothée Coppens Bertrand Théodore Thomas August

A method is presented to compare the L1c products (calibrated radiance spectra) of the two IASI (In- frared Atmospheric Sounding Interferometer) instruments on board the two Metop satellites Metop-A and Metop-B. After defining categories of homogenous geophysical/geographical conditions (day/night, ocean/night, clear/overcast), one can produce grand average spectra with the corresponding statistical diagnostics on the L1c spectral grid (8461 channels between 645 and 2760 cm-1 with a spacing of 0.250 cm-1 ). The corresponding spectra are generated monthly for the 30 scan positions (SP) of the scene acquisition mirror and for the 4 pixels (PN or IFOV) of the two IR sounders. These average spectra (with a much reduced noise as compared to one individual IASI spectrum) and the corresponding uncertainty on a channel-by-channel basis (with a Gaussian character check) can then be used to compare the two instruments on the short time scale (month or shorter periods). A pixel-by-pixel comparison of IASI-A and IASI-B is not possible because the two instruments can never see the same footprint at the same time, since they are flying 50 min apart on the same orbit. But due to this small time difference, the set of sampled IFOVs used for generating the averages (over given homogeneous categories) should obey the approximation ≅ - . The left term of the equation would be the hypothetical pixel-by-pixel spectral radiance difference of the two sounders if they were sampling the same footprint at the same time. The right hand side term is the difference calculated from the mean of the individual sounders calculated for the various categories over a given time period. A status on the efforts to implement this tool in the EPS monitoring environment and the potential for instrument as well as climate monitoring is presented.

Radiometric dating

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