R. Armante
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View article: Monitoring atmospheric ammonia from geostationary orbit: contributions of GIIRS-B and IRS remote sensors
Monitoring atmospheric ammonia from geostationary orbit: contributions of GIIRS-B and IRS remote sensors Open
View article: Ongoing activities at LMD to prepare the CH4 space lidar mission MERLIN
Ongoing activities at LMD to prepare the CH4 space lidar mission MERLIN Open
International audience
View article: Global distribution of methane in the mid-troposphere as seen by IASI onboard three successive Metop platforms
Global distribution of methane in the mid-troposphere as seen by IASI onboard three successive Metop platforms Open
Thanks to its continuous spectral coverage of the whole thermal infrared domain, the IASI sounder offers the possibility to monitor on the long term several essential climate variables, including mid-tropospheric columns of the 3 major gre…
View article: Assessing the future IRS-MTG NH3 and temperature observations
Assessing the future IRS-MTG NH3 and temperature observations Open
Ammonia (NH3) is an atmospheric pollutant mainly emitted by the agricultural sector, which has an effect on public health since it is a precursor of fine particles (PM2.5). The diurnal variability of NH3 in the atmosphere and its transform…
View article: Spectrally refined unbiased Monte Carlo estimate of the Earth’s global radiative cooling
Spectrally refined unbiased Monte Carlo estimate of the Earth’s global radiative cooling Open
The Earth’s radiative cooling is a key driver of climate. Determining how it is affected by greenhouse gas concentration is a core question in climate-change sciences. Due to the complexity of radiative transfer processes, current practice…
View article: Processing of the future IRS-MTG NH3 and temperature products
Processing of the future IRS-MTG NH3 and temperature products Open
Ammonia (NH3) is an atmospheric pollutant mainly emitted by the agricultural sector. It is a precursor of fine particles (PM2.5) and therefore has a major effect on public health, and climate change. The volatilization process of NH3 and i…
View article: Temperature dependence of the absorption of the R(6) manifold of the 2ν3 band of methane in air in support of the MERLIN mission
Temperature dependence of the absorption of the R(6) manifold of the 2ν3 band of methane in air in support of the MERLIN mission Open
View article: Computation of longwave radiative flux and vertical heating rate with 4A-Flux v1.0 as an integral part of the radiative transfer code 4A/OP v1.5
Computation of longwave radiative flux and vertical heating rate with 4A-Flux v1.0 as an integral part of the radiative transfer code 4A/OP v1.5 Open
Based on advanced spectroscopic databases, line-by-line and layer-by-layer radiative transfer codes numerically solve the radiative transfer equation with very high accuracy. Taking advantage of its pre-calculated optical depth lookup tabl…
View article: First analysis of the ν<sub>2</sub>+ν<sub>7</sub> and ν<sub>2</sub>+ν<sub>9</sub> and ν<sub>2</sub>+ν<sub>6</sub> combination bands of HNO<sub>3</sub>: evidence of perturbations due to large amplitude OH torsion in the 2<sup>1</sup>9<sup>1</sup> excited state
First analysis of the ν<sub>2</sub>+ν<sub>7</sub> and ν<sub>2</sub>+ν<sub>9</sub> and ν<sub>2</sub>+ν<sub>6</sub> combination bands of HNO<sub>3</sub>: evidence of perturbations due to large amplitude OH torsion in the 2<sup>1</sup>9<sup>1</sup> excited state Open
This paper is the first of two back-to-back works, whose goal is to update the existing line positions and intensities spectroscopic parameters for the 5.8 µm region of nitric acid in the HITRAN or GEISA spectroscopic databases. This first…
View article: The ν4 bands at 11 µm: linelists for the Trans- and Cis- conformer forms of nitrous acid (HONO) in the 2019 version of the GEISA database
The ν4 bands at 11 µm: linelists for the Trans- and Cis- conformer forms of nitrous acid (HONO) in the 2019 version of the GEISA database Open
Using parameters of line positions and line intensities existing in the literature for the Trans- and Cis- conformer forms of nitrous acid (HONO), we generated, for the first time, a linelist of positions, intensities, and line shape param…
View article: Computation of longwave radiative flux and vertical heating rate with 4A-Flux v1.0 as integral part of the radiative transfer code 4A/OP v1.5
Computation of longwave radiative flux and vertical heating rate with 4A-Flux v1.0 as integral part of the radiative transfer code 4A/OP v1.5 Open
Based on advanced spectroscopic databases, line-by-line and layer-by-layer radiative transfer codes numerically solve the radiative transfer equation with a very high accuracy. Taking advantage of its pre-calculated optical depth look-up t…
View article: The 5.8 µm absorption bands for nitric acid (H<sup>14</sup>N<sup>16</sup>O<sub>3</sub>): line positions and intensities for the ν<sub>2</sub> band at 1709.567 cm<sup>−1</sup> and for its first associated hot bands (ν<sub>2</sub>+ν<sub>9</sub>−ν<sub>9</sub>, ν<sub>2</sub>+ν<sub>7</sub>−ν<sub>7</sub>, ν<sub>2</sub>+ν<sub>6</sub>−ν<sub>6</sub>)
The 5.8 µm absorption bands for nitric acid (H<sup>14</sup>N<sup>16</sup>O<sub>3</sub>): line positions and intensities for the ν<sub>2</sub> band at 1709.567 cm<sup>−1</sup> and for its first associated hot bands (ν<sub>2</sub>+ν<sub>9</sub>−ν<sub>9</sub>, ν<sub>2</sub>+ν<sub>7</sub>−ν<sub>7</sub>, ν<sub>2</sub>+ν<sub>6</sub>−ν<sub>6</sub>) Open
International audience
View article: First analysis of the ν<sub>2</sub>+ν<sub>7</sub> and ν<sub>2</sub>+ν<sub>9</sub> and ν<sub>2</sub>+ν<sub>6</sub> combination bands of HNO<sub>3</sub>: evidence of perturbations due to large amplitude OH torsion in the 2<sup>1</sup>9<sup>1</sup> excited state
First analysis of the ν<sub>2</sub>+ν<sub>7</sub> and ν<sub>2</sub>+ν<sub>9</sub> and ν<sub>2</sub>+ν<sub>6</sub> combination bands of HNO<sub>3</sub>: evidence of perturbations due to large amplitude OH torsion in the 2<sup>1</sup>9<sup>1</sup> excited state Open
International audience
View article: The ν4 bands at 11 µm: linelists for the Trans- and Cis- conformer forms of nitrous acid (HONO) in the 2019 version of the GEISA database
The ν4 bands at 11 µm: linelists for the Trans- and Cis- conformer forms of nitrous acid (HONO) in the 2019 version of the GEISA database Open
International audience
View article: Development and Validation of an End-to-End Simulator and Gas Concentration Retrieval Processor Applied to the MERLIN Lidar Mission
Development and Validation of an End-to-End Simulator and Gas Concentration Retrieval Processor Applied to the MERLIN Lidar Mission Open
In the context of MERLIN (MEthane Remote LIdar missioN), a French–German spatial lidar mission dedicated to monitoring the atmospheric methane content, two software programs have been developed: LIDSIM (LIDar SIMulator) and PROLID (PROcess…
View article: The 2020 edition of the GEISA spectroscopic database
The 2020 edition of the GEISA spectroscopic database Open
View article: The Adaptable 4A Inversion (5AI): description and first <i>X</i> <sub> CO <sub>2</sub> </sub> retrievals from Orbiting Carbon Observatory-2 (OCO-2) observations
The Adaptable 4A Inversion (5AI): description and first <i>X</i> <sub> CO <sub>2</sub> </sub> retrievals from Orbiting Carbon Observatory-2 (OCO-2) observations Open
A better understanding of greenhouse gas surface sources and sinks is required in order to address the global challenge of climate change. Space-borne remote estimations of greenhouse gas atmospheric concentrations can offer the global cov…
View article: First analysis of the ν<sub>2</sub>+ν<sub>7</sub> and ν<sub>2</sub>+ν<sub>9</sub> and ν<sub>2</sub>+ν<sub>6</sub> combination bands of HNO<sub>3</sub>: evidence of perturbations due to large amplitude OH torsion in the 2<sup>1</sup>9<sup>1</sup> excited state
First analysis of the ν<sub>2</sub>+ν<sub>7</sub> and ν<sub>2</sub>+ν<sub>9</sub> and ν<sub>2</sub>+ν<sub>6</sub> combination bands of HNO<sub>3</sub>: evidence of perturbations due to large amplitude OH torsion in the 2<sup>1</sup>9<sup>1</sup> excited state Open
This paper is the first of two back-to-back works, whose goal is to update the existing line positions and intensities spectroscopic parameters for the 5.8 µm region of nitric acid in the HITRAN or GEISA spectroscopic databases. This first…
View article: The ν4 bands at 11 µm: linelists for the Trans- and Cis- conformer forms of nitrous acid (HONO) in the 2019 version of the GEISA database*
The ν4 bands at 11 µm: linelists for the Trans- and Cis- conformer forms of nitrous acid (HONO) in the 2019 version of the GEISA database* Open
Using parameters of line positions and line intensities existing in the literature for the Trans- and Cis- conformer forms of nitrous acid (HONO), we generated, for the first time, a linelist of positions, intensities, and line shape param…
View article: Validation of spectroscopic data in the 1.27 µm spectral region by comparisons with ground-based atmospheric measurements
Validation of spectroscopic data in the 1.27 µm spectral region by comparisons with ground-based atmospheric measurements Open
View article: The new nitrogen dioxide (NO2) linelist in the GEISA database and first identification of the ν1+2ν3-ν3 band of 14N16O2
The new nitrogen dioxide (NO2) linelist in the GEISA database and first identification of the ν1+2ν3-ν3 band of 14N16O2 Open
View article: The Adaptable 4A Inversion (5AI): Description and first XCO <sub>2</sub> retrievals from OCO-2 observations
The Adaptable 4A Inversion (5AI): Description and first XCO <sub>2</sub> retrievals from OCO-2 observations Open
A better understanding of greenhouse gas surface sources and sinks is required in order to address the global challenge of climate change. Spaceborne remote estimations of greenhouse gas atmospheric concentrations can offer the global cove…
View article: The Adaptable 4A Inversion (5AI): Description and first XCO2 retrievals from OCO-2 observations [Discussion paper]
The Adaptable 4A Inversion (5AI): Description and first XCO2 retrievals from OCO-2 observations [Discussion paper] Open
A better understanding of greenhouse gas surface sources and sinks is required in order to address the global challenge of climate change. Spaceborne remote estimations of greenhouse gas atmospheric concentrations can offer the global cove…
View article: Measurement and Modeling of Air‐Broadened Methane Absorption in the MERLIN Spectral Region at Low Temperatures
Measurement and Modeling of Air‐Broadened Methane Absorption in the MERLIN Spectral Region at Low Temperatures Open
The ability to precisely model methane absorption in the R(6) manifold of the 2ν 3 band at atmospheric pressure and temperature conditions is a key technical requirement of the German‐French, Methane Remote Sensing Lidar (MERLIN) space mis…
View article: Indirect Influence of Humidity on Atmospheric Spectra Near 4 μm
Indirect Influence of Humidity on Atmospheric Spectra Near 4 μm Open
We give the first demonstration that humidity has indirect effects on atmospheric spectra near 4 μm, through the influence of collisions with H 2 O on both the collision‐induced band of N 2 and the wings of the CO 2 lines. This is shown by…
View article: Prediction of high-order line-shape parameters for air-broadened O2 lines using requantized classical molecular dynamics simulations and comparison with measurements
Prediction of high-order line-shape parameters for air-broadened O2 lines using requantized classical molecular dynamics simulations and comparison with measurements Open
View article: Error Budget of the MEthane Remote LIdar missioN and Its Impact on the Uncertainties of the Global Methane Budget
Error Budget of the MEthane Remote LIdar missioN and Its Impact on the Uncertainties of the Global Methane Budget Open
MEthane Remote LIdar missioN (MERLIN) is a German‐French space mission, scheduled for launch in 2024 and built around an innovative light detecting and ranging instrument that will retrieve methane atmospheric weighted columns. MERLIN prod…
View article: Copernicus Climate Change Service (C3S) Global Satellite Observations of Atmospheric Carbon Dioxide and Methane
Copernicus Climate Change Service (C3S) Global Satellite Observations of Atmospheric Carbon Dioxide and Methane Open
Carbon dioxide (CO2) and methane (CH4) are important atmospheric greenhouse gases (GHG) and, therefore, classified as essential climate variables (ECVs). Previously, satellite-derived atmospheric CO2 and methane CH4 ECV data sets have been…
View article: Recent advances in collisional effects on spectra of molecular gases and their practical consequences
Recent advances in collisional effects on spectra of molecular gases and their practical consequences Open
View article: A simulated observation database to assess the impact of the IASI-NG hyperspectral infrared sounder
A simulated observation database to assess the impact of the IASI-NG hyperspectral infrared sounder Open
The highly accurate measurements of the hyperspectral Infrared Atmospheric Sounding Interferometer (IASI) are used in numerical weather prediction (NWP), atmospheric chemistry and climate monitoring. As the second generation of the Europea…