Quantifying VOC emissions from East Asia using 10 years of satellite observations

Trissevgeni Stavrakou 1 Jean-François Müller 1 Maite Bauwens 1 Isabelle de Smedt 1 Michel van Roozendaël 1 Folkert Boersma 2 Ronald J. van der A 2 Pierre-François Coheur 3 Cathy Clerbaux 3, 4
1 BIRA-IASB - Belgian Institute for Space Aeronomy / Institut d'Aéronomie Spatiale de Belgique
2 KNMI - Royal Netherlands Meteorological Institute
3 Spectroscopie de l'atmosphère, Service de Chimie Quantique et Photophysique
4 TROPO - LATMOS
LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales
Abstract : China’s emissions are in the spotlight of efforts to mitigate climate change and improve regional and city-scale air quality. Despite growing efforts to better quantify China’s emissions, the current estimates are often poor or inadequate. Complementary to bottom-up inventories, inverse modeling of fluxes has the potential to improve those estimates through the use of atmospheric observations of trace gas compounds. As formaldehyde (HCHO) is a high-yield product in the oxidation of most volatile organic compounds (VOCs) emitted by anthropogenic and natural sources, satellite observations of HCHO hold the potential to inform us on the spatial and temporal variability of the underlying VOC sources. The 10-year record of space-based HCHO column observations from the OMI instrument is used to constrain VOC emission fluxes in East Asia in a source inversion framework built on the IMAGES chemistry-transport model and its adjoint. The interannual and seasonal variability, spatial distribution and potential trends of the top-down VOC fluxes (anthropogenic, pyrogenic and biogenic) are presented and confronted to existing emission inventories, satellite observations of other species (e.g. glyoxal and nitrogen oxides), and past studies.
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Conference papers
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https://hal-insu.archives-ouvertes.fr/insu-01423649
Contributor : Catherine Cardon <>
Submitted on : Friday, December 30, 2016 - 6:27:15 PM
Last modification on : Friday, January 10, 2020 - 3:42:34 PM

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Trissevgeni Stavrakou, Jean-François Müller, Maite Bauwens, Isabelle de Smedt, Michel van Roozendaël, et al.. Quantifying VOC emissions from East Asia using 10 years of satellite observations . AGU Fall Meeting 2016, Dec 2016, San Francisco, United States. pp.A24A-02. ⟨insu-01423649⟩

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