Emission inventory

OMI-based isoprene emissions over South America

Satellite-derived isoprene emission estimates based on OMI HCHO columns


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Top-down monthly biogenic isoprene emission distributions in 2017  (expressed in Tg/yr).

monthly isoprene maps

About the data

The top-down emissions are inferred from an inverse modelling scheme based on the MAGRITTE regional model (Müller et al., 2019, Stavrakou et al., 2016) and are constrained by HCHO column observation from the QA4ECV product from the OMI sensor (De Smedt et al., 2018). The a priori emission inventory used in MAGRITTE is based on the MEGAN-MOHYCAN emission model and described in Stavrakou et al. (2018).

Formaldehyde is formed during the oxidation of most VOCs released in the atmosphere.  HCHO is a high yield product formed the oxidation of isoprene and the current chemical mechanism of MAGRITTEv1.1 is described in Müller et al. (2019). The data are provided in the frame of the scientific data exploitation SOLFEO project (Spaceborne Observations over Latin America For Emission Optimization applications, 2019-2020) supported by the European Space Agency.

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Monthly emissions are available in NetCDF format at a resolution of 0.5°x0.5°.

Technical information is available in this readme file.

Monthly isoprene emissions:

2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017

 

References

  • Müller, J.-F., T. Stavrakou, and J. Peeters: Chemistry and deposition in the Model of Atmospheric composition at Global and Regional scales using Inversion Techniques for Trace Gas Emissions (MAGRITTE v1.1). Part A. Chemical mechanism, Geosci. Model Dev., 12, 2307-2356, https://doi.org/10.5194/gmd-12-2307-2019, 2019.

  • Stavrakou, T., J.-F. Müller, M. Bauwens, I. De Smedt, C. Lerot, M. Van Roozendael, P.F. Coheur, C. Clerbaux, K. F. Boersma, R. van der A, and Y. Song, Substantial Underestimation of Post-Harvest Burning Emissions in the North China Plain Revealed by Multi-Species Space Observations, Sci. Rep., 6, 32307, https://doi.org/10.1038/srep32307, 2016.

  • De Smedt, I., Theys, N., Yu, H., Danckaert, T., Lerot, C., Compernolle, S., Van Roozendael, M., Richter, A., Hilboll, A., Peters, E., Pedergnana, M., Loyola, D., Beirle, S., Wagner, T., Eskes, H., van Geffen, J., Boersma, K. F., and Veefkind, P.: Algorithm theoretical baseline for formaldehyde retrievals from S5P TROPOMI and from the QA4ECV project, Atmos. Meas. Tech., 11, 2395–2426, https://doi.org/10.5194/amt-11-2395-2018, 2018.

  • Stavrakou, T., Müller, J.-F., Bauwens, M., I. De Smedt, M. Van Roozendael, A. Guenther: Impact of short-term climate variability on volatile organic compounds emissions assessed using OMI satellite formaldehyde observations, Geophys. Res. Lett., 45, 1621-1629, http://doi.org/10.1029/2018GL078676, 2018.