Satellite-derived isoprene emission estimates based on GOME-2 HCHO observations (2007-2012)

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The figure below illustrates isoprene emission estimates in 2007 obtained from the a priori MEGAN-MOHYCAN inventory (Stavrakou et al. 2014, Müller et al. 2008, Guenther et al. 2006) and from the GOME-2 based product (units are in Tg/yr)

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Monthly isoprene emissions

 

Daily isoprene emissions:

 

About the data

Using global satellite columns of HCHO retrieved from the GOME-2/MetOp-A sensor (De Smedt et al. 2012) over 2007-2012 as constraints in the IMAGESv2 chemistry-transport model (cf. Stavrakou et al. 2013 for details on the model), we derive satellite-based estimates of isoprene on a monthly basis. These emissions are available on 0.5° resolution.

 

Additional information

GOME2_iso_table

 

References

Stavrakou, T., J.-F. Müller, M. Bauwens, I. De Smedt, M. Van Roozendael, A. Guenther, M. Wild, and X. Xia, Isoprene emissions over Asia 1979-2012 : impact of climate and land use changes, Atmos. Chem. Phys., 14, 4587-4605, 2014 [pdf] [Interactive Discussion]

Stavrakou, T., J.-F. Müller, K-F. Boersma, R.J. van der A, J. Kurokawa, T. Ohara, and Q. Zhang, Key chemical NOx sink uncertainties and how they influence top-down emissions of nitrogen oxides, Atmos. Chem. Phys. 13, 9057-9082, 2013. [Abstract] [pdf] [Supplement] [Interactive Discussion]

De Smedt, I., M. Van Roozendael, T. Stavrakou, J.-F. Müller, C. Lerot, N. Theys, P. Valks, N. Hao, and R. van der A, Improved retrieval of global tropospheric formaldehyde columns from GOME-2/MetOp-A addressing noise reduction and instrumental degradation issues, Atmos. Meas. Tech., 5,  2933-2949, 2012. [Abstract] [pdf]

Müller, J.-F.,T Stavrakou, S. Wallens, I. De Smedt, M. Van Roozendael, M. Potosnak, J. Rinne, B. Munger, A. Goldstein, and A. Guenther, Global isoprene emissions estimated using MEGAN, ECMWF analyses and a detailed canopy environment model, Atmos. Chem. Phys., 8, 1329-1341, 2008. [Full article]

Guenther, A., T. Karl, P. Harley, C. Wiedinmeyer, P.I. Palmer, and C. Geron, Estimates of global terrestrial isoprene emissions using MEGAN (Model of Emissions of Gases and Aerosols from Nature), Atmos. Chem. Phys., 6, 3181-3210, 2006 [Full article]