N
Nicolas Theys
Researcher at Belgian Institute for Space Aeronomy
Publications - 114
Citations - 4041
Nicolas Theys is an academic researcher from Belgian Institute for Space Aeronomy. The author has contributed to research in topics: Volcano & Ozone Monitoring Instrument. The author has an hindex of 29, co-authored 103 publications receiving 3153 citations.
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Journal ArticleDOI
Cleaning up the air: effectiveness of air quality policy for SO 2 and NO x emissions in China
Ronald van der A,Ronald van der A,Bas Mijling,Jieying Ding,Jieying Ding,Maria-Elissavet Koukouli,Fei Liu,Qing Li,Huiqin Mao,Nicolas Theys +9 more
TL;DR: In this article, the effect of air quality regulations from economic growth by comparing them relatively to fossil fuel consumption is distinguished by using satellite data for monitoring long-term trends in atmospheric species.
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A global catalogue of large SO 2 sources and emissions derived from theOzone Monitoring Instrument
Vitali Fioletov,Chris A. McLinden,Nickolay A. Krotkov,Can Li,Can Li,Joanna Joiner,Nicolas Theys,Simon Carn,M. D. Moran +8 more
TL;DR: In this article, the principal component analysis (PCA) algorithm was used to detect large point emission sources or clusters of sources from the Ozone monitoring instrument (OMI) satellite sensor.
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Tropospheric bromine chemistry: implications for present and pre-industrial ozone and mercury
J. P. Parrella,Daniel J. Jacob,Qing Liang,Qing Liang,Yanxu Zhang,Loretta J. Mickley,Benjamin F. Miller,Mathew J. Evans,Xin Yang,John A. Pyle,Nicolas Theys,M. Van Roozendael +11 more
TL;DR: In this paper, a new model for the global tro- pospheric chemistry of inorganic bromine (Bry) coupled to oxidant-aerosol chemistry in the GEOS-Chem chemical transport model (CTM) is presented.
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Diurnal, seasonal and long-term variations of global formaldehyde columns inferred from combined OMI and GOME-2 observations
I. De Smedt,Trissevgeni Stavrakou,François Hendrick,Thomas Danckaert,T. Vlemmix,Gaia Pinardi,Nicolas Theys,Christophe Lerot,Clio Gielen,Corinne Vigouroux,Christian Hermans,Caroline Fayt,Pepijn Veefkind,Jean-François Müller,M. Van Roozendael +14 more
TL;DR: In this article, the authors present the new version (v14) of the BIRA-IASB algorithm for the retrieval of formaldehyde (H2CO) columns from spaceborne UV-visible sensors.
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Volcanic SO 2 fluxes derived from satellite data: a survey using OMI, GOME-2, IASI and MODIS
Nicolas Theys,Robin Campion,Robin Campion,Lieven Clarisse,Hugues Brenot,J. van Gent,Bart Dils,Stefano Corradini,Luca Merucci,P.-F. Coheur,M. Van Roozendael,Daniel Hurtmans,Cathy Clerbaux,Cathy Clerbaux,Steve Tait,F. Ferrucci +15 more
TL;DR: In this article, a review of different techniques to derive volcanic SO 2 fluxes using satellite measurements of plumes of SO 2 and investigate the temporal evolution of the total emissions from three very different volcanic events in 2011: Puyehue-Cordon Caulle (Chile), Nyamulagira (DR Congo) and Nabro (Eritrea).