Journal ArticleDOI
FORLI radiative transfer and retrieval code for IASI
Daniel Hurtmans,Pierre-François Coheur,Catherine Wespes,Lieven Clarisse,Oliver Scharf,Cathy Clerbaux,Cathy Clerbaux,Juliette Hadji-Lazaro,Maya George,Solène Turquety +9 more
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In this article, the authors lay down the theoretical bases and the methods used in the Fast Optimal Retrievals on Layers for IASI (FORLI) software, which is developed and maintained at the Universite Libre de Bruxelles (ULB) with the support of the "Laboratoire Atmospheres, Milieux, Observations Spatiales" (LATMOS) to process radiance spectra from the Infrared Atmospheric Sounding Interferometer (IASI) in the perspective of local to global chemistry applications.Abstract:
This paper lays down the theoretical bases and the methods used in the Fast Optimal Retrievals on Layers for IASI (FORLI) software, which is developed and maintained at the "Universite Libre de Bruxelles" (ULB) with the support of the "Laboratoire Atmospheres, Milieux, Observations Spatiales" (LATMOS) to process radiance spectra from the Infrared Atmospheric Sounding Interferometer (IASI) in the perspective of local to global chemistry applications. The forward radiative transfer model (RTM) and the retrieval approaches are formulated and numerical approximations are described. The aim of FORLI is near-real-time provision of global scale concentrations of trace gases from IASI, either integrated over the altitude range of the atmosphere (total columns) or vertically resolved. To this end, FORLI uses precalculated table of absorbances. At the time of writing three gas-specific versions of this algorithm have been set up: FORLI-CO, FORLI-O3 and FORLI-HNO3. The performances of each are reviewed and illustrations of results and early validations are provided, making the link to recent scientific publications. In this paper we stress the challenges raised by near-real-time processing of IASI, shortly describe the processing chain set up at ULB and draw perspectives for future developments and applications.read more
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Tropospheric Ozone Assessment Report: Present-day distribution and trends of tropospheric ozone relevant to climate and global atmospheric chemistry model evaluation
Audrey Gaudel,Owen R. Cooper,Gérard Ancellet,Brice Barret,Anne Boynard,John P. Burrows,Cathy Clerbaux,P.-F. Coheur,Juan Cuesta,Emilio Cuevas,Stamatia Doniki,Gaëlle Dufour,F. Ebojie,Gilles Foret,Omaira García,M. J. Granados Muños,James W. Hannigan,Frank Hase,Guanyu Huang,Birgit Hassler,Daniel Hurtmans,Daniel A. Jaffe,Nicholas B. Jones,P. Kalabokas,Brian Kerridge,Susan S. Kulawik,Barry G. Latter,Thierry Leblanc,E. Le Flochmoën,W. Lin,Jane Liu,Xiong Liu,Emmanuel Mahieu,Audra McClure-Begley,Jessica L. Neu,Mohammed K. Osman,Mathias Palm,Hervé Petetin,Irina Petropavlovskikh,Richard Querel,Nabiz Rahpoe,A. Rozanov,Martin G. Schultz,James J. Schwab,Richard Siddans,Dan Smale,Martin Steinbacher,Hiroshi Tanimoto,David W. Tarasick,Valérie Thouret,Anne M. Thompson,Thomas Trickl,Catherine Wespes,Helen M. Worden,Corinne Vigouroux,Xiaobin Xu,Guang Zeng,Jerry Ziemke +57 more
TL;DR: The Tropospheric Ozone Assessment Report (TOAR) is an activity of the International Global Atmospheric Chemistry Project as mentioned in this paper, which provides a detailed view of ozone in the lower troposphere across East Asia and Europe.
Journal ArticleDOI
Atmospheric ammonia and particulate inorganic nitrogen over the United States
Colette L. Heald,Jeffrey L. Collett,Taehyoung Lee,Katherine B. Benedict,Florian M. Schwandner,Florian M. Schwandner,Yulun Li,Lieven Clarisse,Daniel Hurtmans,M. Van Damme,Cathy Clerbaux,Cathy Clerbaux,Pierre-François Coheur,Sajeev Philip,Randall V. Martin,Havala O. T. Pye +15 more
TL;DR: The authors used in situ observations from the Interagency Monitoring of Protected Visual Environments (IMPROVE) network, the Midwest Ammonia Monitoring Project, 11 surface site campaigns as well as Infrared Atmospheric Sounding Interferometer (IASI) satellite measurements with the GEOS-Chem model to investigate inorganic aerosol loading and atmospheric ammonia concentrations over the United States.
Journal ArticleDOI
Global distributions, time series and error characterization of atmospheric ammonia (NH 3 ) from IASI satellite observations
M. Van Damme,M. Van Damme,Lieven Clarisse,Colette L. Heald,Daniel Hurtmans,Yasmine Ngadi,Cathy Clerbaux,Cathy Clerbaux,A. J. Dolman,Jan Willem Erisman,P.-F. Coheur +10 more
TL;DR: In this article, an improved retrieval scheme of NH3 total columns from the measurements of the Infrared Atmospheric Sounding Interferometer (IASI) is described. But this scheme consists of the calculation of a dimensionless spectral index from the IASI level 1C radiances, which is subsequently converted to a total NH3 column using look-up tables built from forward radiative transfer model simulations.
Journal ArticleDOI
Decadal record of satellite carbon monoxide observations
Helen M. Worden,Merritt N. Deeter,Christian Frankenberg,Maya George,F. Nichitiu,John Worden,Ilse Aben,Kevin W. Bowman,Cathy Clerbaux,Cathy Clerbaux,Pierre-François Coheur,J. de Laat,J. de Laat,R. Detweiler,James R. Drummond,David P. Edwards,John C. Gille,Daniel Hurtmans,M. Luo,Sara Martínez-Alonso,Steven T. Massie,Gabriele Pfister,Juying Warner +22 more
TL;DR: In this article, the authors present a comprehensive record of satellite observations from 2000 through 2011 of total column CO using the available measurements from nadir-viewing thermal infrared instruments: MOPITT, AIRS, TES and IASI.
Decadal Record of Satellite Carbon Monoxide Observations
Helen M. Worden,Merritt N. Deeter,Christian Frankenberg,Maya George,F. Nichitiu,John Worden,Ilse Aben,Kevin W. Bowman,Cathy Clerbaux,Pierre-François Coheur,Jos de Laat,Juying Warner,James R. Drummond,David P. Edwards,John C. Gille,Daniel Hurtmans,Luo Ming,Sara Martínez-Alonso,Steven T. Massie,Gabriele Pfister +19 more
References
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Journal ArticleDOI
Toward a Monitoring and Forecasting System For Atmospheric Composition: The GEMS Project
Anthony Hollingsworth,Richard Engelen,C. Textor,Angela Benedetti,Olivier Boucher,Frédéric Chevallier,A. Dethof,Hendrik Elbern,Henk Eskes,Johannes Flemming,Claire Granier,Johannes W. Kaiser,J.-J. Morcrette,Peter Rayner,Vincent-Henri Peuch,Laurence Rouil,Martin G. Schultz,Adrian Simmons +17 more
TL;DR: The Global and Regional Earth System Monitoring Using Satellite and In Situ Data (GEMS) project is combining the manifold expertise in atmospheric composition research and numerical weather prediction of 32 European institutes to build a comprehensive monitoring and forecasting system for greenhouse gases, reactive gases, aerosol and regional air quality as discussed by the authors.
Journal ArticleDOI
Rapid approximation to the Voigt/Faddeeva function and its derivatives
TL;DR: In this article, the authors adapted existing algorithms for the calculation of the Voigt/Faddeeva function to produce a method which is more efficient for atmospheric line-by-line calculations.
Journal ArticleDOI
Carbon monoxide distributions from the IASI/METOP mission: evaluation with other space-borne remote sensors
Maya George,Cathy Clerbaux,Daniel Hurtmans,Solène Turquety,Solène Turquety,Pierre-François Coheur,Matthieu Pommier,Juliette Hadji-Lazaro,David P. Edwards,Helen M. Worden,M. Luo,Curtis P. Rinsland,W. McMillan +12 more
TL;DR: In this article, the authors presented the measurement vertical sensitivity of the infrared Atmospheric Sounding Interferometer (IASI) onboard the MetOp satellite and provided a first assessment of the capabilities of IASI to measure CO distributions.
Journal ArticleDOI
An improved infrared carbon monoxide analyser for routine measurements aboard commercial Airbus aircraft: technical validation and first scientific results of the MOZAIC III programme
Philippe Nédélec,Jean-Pierre Cammas,Valérie Thouret,Gilles Athier,Jean-Marc Cousin,C. Legrand,C. Abonnel,F. Lecoeur,G. Cayez,C. Marizy +9 more
TL;DR: In this article, a new infrared carbon monoxide analyser has been developed for installation on the European-funded MOZAIC equipped aircraft, which has been operational since 1994 aboard 5 commercial Airbus A340.
Journal ArticleDOI
Daily global maps of carbon monoxide from NASA's Atmospheric Infrared Sounder
W. W. McMillan,Christopher D. Barnet,L. Larrabee Strow,Moustafa T. Chahine,M. L. McCourt,Juying Warner,Paul C. Novelli,S. Korontzi,Eric Maddy,Saswati Datta +9 more
TL;DR: McMillan et al. as discussed by the authors presented the first observations of tropospheric carbon monoxide (CO) by the Atmospheric Infrared Sounder (AIRS) onboard NASA's Aqua satellite.
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