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Volume 15, issue 1
Atmos. Chem. Phys., 15, 223–240, 2015
https://doi.org/10.5194/acp-15-223-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: Surface Ocean Aerosol Production (SOAP) (ACP/OS inter-journal...

Atmos. Chem. Phys., 15, 223–240, 2015
https://doi.org/10.5194/acp-15-223-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 12 Jan 2015

Research article | 12 Jan 2015

Seasonal in situ observations of glyoxal and methylglyoxal over the temperate oceans of the Southern Hemisphere

S. J. Lawson et al.

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Cited articles

Ayers, G. P. and Gras, J. L.: Seasonal relationship between cloud condensation nuclei and aerosol methanesulfonate in marine air, Nature, 353, 834–835, 1991.
Betterton, E. A. and Hoffmann, M. R.: Henry's law constants of some environmentally important aldehydes, Environ. Sci. Technol., 22, 1415–1418, https://doi.org/10.1021/es00177a004, 1988.
Bikkina, S., Kawamura, K., Miyazaki, Y., and Fu, P.: High abundances of oxalic, azelaic, and glyoxylic acids and methylglyoxal in the open ocean with high biological activity: implication for secondary OA formation from isoprene, Geophys. Res. Lett., 41, 2014GL059913, https://doi.org/10.1002/2014GL059913, 2014.
Bowie, A. R., Brian Griffiths, F., Dehairs, F., and Trull, T. W.: Oceanography of the subantarctic and Polar Frontal Zones south of Australia during summer: setting for the SAZ-Sense study, Deep-Sea Res. Pt. II, 58, 2059–2070, https://doi.org/10.1016/j.dsr2.2011.05.033, 2011.
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Glyoxal and methylglyoxal are short-lived organic trace gases and important precursors of secondary organic aerosol. Measurements over oceans are sparse. We present the first in situ glyoxal and methylglyoxal observations over remote temperate oceans, alongside observations of precursor gases. Precursor gases cannot explain observed mixing ratios, highlighting an unknown source. We show a large discrepancy between calculated vertical column densities of glyoxal and those retrieved by satellite.
Glyoxal and methylglyoxal are short-lived organic trace gases and important precursors of...
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