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Discussion papers | Copyright
© Author(s) 2018. This work is distributed under
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Research article 15 May 2018

Research article | 15 May 2018

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This discussion paper is a preprint. A revision of the manuscript is under review for the journal Atmospheric Measurement Techniques (AMT).

Mapping carbon monoxide pollution from space down to city scales with daily global coverage

Tobias Borsdorff1, Joost aan de Brugh1, Haili Hu1, Otto Hasekamp1, Ralf Sussmann2, Markus Rettinger2, Frank Hase3, Jochen Gross3, Matthias Schneider3, Omaira Garcia4, Wolfgang Stremme5, Michel Grutter5, Dietrich G. Feist6, Sabrina G. Arnold6, Martine De Mazière7, Mahesh Kumar Sha7, David F. Pollard8, Matthäus Kiel9, Coleen Roehl9, Paul O. Wennberg9,10, Geoffrey C. Toon11, and Jochen Landgraf1 Tobias Borsdorff et al.
  • 1SRON Netherlands Institute for Space Research, Utrecht, the Netherlands
  • 2Karlsruhe Institute of Technology (KIT), IMK-IFU, Garmisch-Partenkirchen, Germany
  • 3Karlsruhe Institute of Technology (KIT), IMK-ASF, Karlsruhe, Germany
  • 4Izaña Atmospheric Research Centre (IARC), Agencia Estatal de Meteorología (AEMET), Santa Cruz de Tenerife, Spain
  • 5Centro de Ciencias de la Atmósfera, Universidad Nacional Autónoma de México, México City, México
  • 6Max Planck Institute for Biogeochemistry, Jena, Germany
  • 7Royal Belgian Institute for Space Aeronomy (BIRA-IASB), Brussels, Belgium
  • 8National Institute of Water and Atmospheric Research Ltd (NIWA), Lauder, New Zealand
  • 9Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, USA
  • 10Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA, USA
  • 11Jet Propulsion Laboratory (JPL), California Institute of Technology, Pasadena, CA, USA

Abstract. On 13th October, 2017, the European Space Agency (ESA) successfully launched the Sentinel-5 Precursor satellite with the Tropospheric Monitoring Instrument (TROPOMI) as its single payload. TROPOMI is the first of ESA's atmospheric composition Sentinel missions, which will provide complete long-term records of atmospheric trace gases for the coming 30 years as a contribution to the European Union's Earth Observing programme Copernicus. One of TROPOMI's primary products is atmospheric carbon monoxide (CO). It is observed with daily global coverage and a high spatial resolution of 7×7km2. Due to its moderate atmospheric residence time, its atmospheric abundance provides information on both localized pollution hot spots and the pollutant transport on regional to global scales. In this contribution, we demonstrate the game-changing performance of the TROPOMI CO product, sensing CO enhancements above cities and industrial areas and tracking, with daily coverage, the atmospheric transport of pollution from biomass burning regions. The CO data product is validated with two months of Fourier-transform spectroscopy (FTS) measurements at nine ground-based stations operated by the Total Carbon Column Observing Network (TCCON). We found a good agreement between both data sets with a mean bias of 6ppb for both clear-sky and cloudy TROPOMI CO retrievals. Together with the corresponding standard deviation of the station-to-station bias of 3.9ppb for clear-sky and 2.4ppb for cloudy-sky, it indicates that the CO data product is already well within the mission requirement.

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