Satellite-derived isoprene emission estimates based on OMI HCHO (2005-2014)

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The figure below shows isoprene emission estimates averaged over 2005-2014 for the a priori MEGAN-MOHYCAN inventory (Guenther et al. 2006, Müller et al. 2008, Stavrakou et al. 2014) and for the OMI-based product (units are Tg/yr)

Average_isop

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About the data

Using global satellite columns of HCHO retrieved from the OMI sensor (De Smedt et al. 2015) over 2005-2014 as constraints in the IMAGESv2 chemistry-transport model (cf. Stavrakou et al. 2015) for details on the model), we derive satellite-based estimates of isoprene on a monthly basis.

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These emissions are here available in NetCDF format in 0.5x0.5° monthly or daily resolution

Monthly isoprene emissions:

 

Daily isoprene emissions:

 

Additional information

The table below summarizes the interannual variation for the OMI-based isoprene emssions over 9 big regions.

Isop_table

 

Dataset citation

Bauwens, M., Stavrakou, T., Müller, J.-F., De Smedt, I., Van Roozendael, M., van der Werf,, G. R., Wiedinmyer, C., Kaiser, J., Sindelarova, K., and Guenther, A.: Nine years of global hydrocarbon emissions based on source inversion of OMI formaldehyde observations, accepted in Atmos. Chem. Phys., doi:10.5194/acp-2016-221, 2016 [Abstract][pdf][Supplement].

 

References:

Bauwens, M., Stavrakou, T., Müller, J.-F., De Smedt, I., Van Roozendael, M., van der Werf,, G. R., Wiedinmyer, C., Kaiser, J., Sindelarova, K., and Guenther, A.: Nine years of global hydrocarbon emissions based on source inversion of OMI formaldehyde observations, accepted in Atmos. Chem. Phys., doi:10.5194/acp-2016-221, 2016 [Abstract][pdf][Supplement].

Stavrakou, T., J.-F. Müller, M. Bauwens, I. De Smedt, M. Van Roozendael, M. De Mazière, C. Vigouroux, F. Hendrick, M. George, C. Clearbaux, P.-F. Coheur, and A. Guenther, How consistent are top-down hydrocarbon emissions based on formaldehyde observations from GOME-2 and OMI? Atmos. Chem. Phys., 15, 12007-12067, doi:10.5194/acpd-15-12007-2015, 2015. [Discussion][pdf]

De Smedt, I., T. Stavrakou, F. Hendrick, T. Danckaert, T. Vlemmix, G. Pinardi, N. Theys, C. Lerot, C. Gilelen, C. Vigouroux, C. Hermans, C. Fayt, J. P. Veefkind, J.-F. Müller, and M. Van Roozendael, Diurnal, seasonal, and long-term variation of global formaldehyde columns inferred from combined OMI and GOME-2 observations, Atmos. Chem. Phys., 15,  12519-12545, doi:10.5194/acp-15-12519-2015, 2015. [Discussion][pdf]

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]

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]