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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Journal ArticleDOI
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
On the capability of IASI measurements to inform about CO surface emissions
Audrey Fortems-Cheiney,Frédéric Chevallier,Isabelle Pison,Philippe Bousquet,C. Carouge,C. Carouge,Cathy Clerbaux,Pierre-François Coheur,Michael George,Daniel Hurtmans,Sophie Szopa +10 more
TL;DR: In this article, the authors used a variational Bayesian system to infer the global distribution of CO emissions using the Infrared Atmospheric Sounding Instrument (IASI) and Measurements Of Pollution In The Troposphere (MOPITT) data.
Journal ArticleDOI
Validation of the MetOp-A total ozone data from GOME-2 and IASI using reference ground-based measurements at the Iberian Peninsula
Manuel Antón,Diego Loyola,Cathy Clerbaux,María M. López,José Manuel Vilaplana,M. Bañón,Juliette Hadji-Lazaro,Pieter Valks,Nan Hao,Walter Zimmer,Pierre-François Coheur,Daniel Hurtmans,Lucas Alados-Arboledas +12 more
TL;DR: In this article, the authors focus on the simultaneous validation of the TOC data provided by these two MetOp-A instruments using the measurements recorded by five well-calibrated Brewer UV spectrophotometers located at the Iberian Peninsula during the complete 2009.
Journal ArticleDOI
Measurements of SO2 profiles in volcanic plumes from the NASA Tropospheric Emission Spectrometer (TES)
Cathy Clerbaux,Cathy Clerbaux,Pierre-François Coheur,Lieven Clarisse,Juliette Hadji-Lazaro,Daniel Hurtmans,Solène Turquety,Kevin W. Bowman,Helen M. Worden,Helen M. Worden,Simon Carn,Simon Carn +11 more
TL;DR: In this paper, the authors report the first SO2 vertical profile retrieved from high spectral resolution thermal infrared nadir radiance spectra and provide information on both the quantity of gas emitted and its altitude.
Journal ArticleDOI
Infrared satellite observations of hydrogen sulfide in the volcanic plume of the August 2008 Kasatochi eruption
Lieven Clarisse,Pierre-François Coheur,Simon Chefdeville,Jean-Lionel Lacour,Daniel Hurtmans,Cathy Clerbaux,Cathy Clerbaux +6 more
TL;DR: In this paper, the first measurements of a large H2S plume from space were made with the infrared sounder IASI of the volcanic plume released after the 7-8 August 2008 eruption of Kasatochi volcano.
Journal ArticleDOI
The transmitter pointing determination in the Geoscience Laser Altimeter System
J. Marcos Sirota,Sungkoo Bae,Pamela S. Millar,David Mostofi,C. E. Webb,Bob E. Schutz,Scott B. Luthcke +6 more
TL;DR: In this article, the Geoscience Laser Altimeter System (GLAS) on the Ice, Cloud and land Elevation Satellite (ICESat) uses a novel system for determination of the laser pointing vector.
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