Articles | Volume 16, issue 12
https://doi.org/10.5194/acp-16-7569-2016
https://doi.org/10.5194/acp-16-7569-2016
Research article
 | 
21 Jun 2016
Research article |  | 21 Jun 2016

The contribution of oceanic halocarbons to marine and free tropospheric air over the tropical West Pacific

Steffen Fuhlbrügge, Birgit Quack, Susann Tegtmeier, Elliot Atlas, Helmke Hepach, Qiang Shi, Stefan Raimund, and Kirstin Krüger

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Delivery of halogenated very short-lived substances from the west Indian Ocean to the stratosphere during the Asian summer monsoon
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Biogenic halocarbons from the Peruvian upwelling region as tropospheric halogen source
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Cited articles

Aschmann, J. and Sinnhuber, B.-M.: Contribution of very short-lived substances to stratospheric bromine loading: uncertainties and constraints, Atmos. Chem. Phys., 13, 1203–1219, https://doi.org/10.5194/acp-13-1203-2013, 2013.
Aschmann, J., Sinnhuber, B.-M., Chipperfield, M. P., and Hossaini, R.: Impact of deep convection and dehydration on bromine loading in the upper troposphere and lower stratosphere, Atmos. Chem. Phys., 11, 2671–2687, https://doi.org/10.5194/acp-11-2671-2011, 2011.
Brinckmann, S., Engel, A., Bönisch, H., Quack, B., and Atlas, E.: Short-lived brominated hydrocarbons – observations in the source regions and the tropical tropopause layer, Atmos. Chem. Phys., 12, 1213–1228, https://doi.org/10.5194/acp-12-1213-2012, 2012.
Carpenter, L. and Liss, P.: On temperate sources of bromoform and other reactive organic bromine gases, J. Geophys. Res.-Atmos., 105, 20539–20547, https://doi.org/10.1029/2000JD900242, 2000.
Carpenter, L., Liss, P., and Penkett, S.: Marine organohalogens in the atmosphere over the Atlantic and Southern Oceans, J. Geophys. Res.-Atmos., 108, 4256, https://doi.org/10.1029/2002JD002769, 2003.
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This study presents a novel estimate for the contribution of oceanic VSLS emissions to the atmospheric boundary layer and free troposphere during the SHIVA-Sonne cruise in the South China and Sulu seas in 2011. While oceanic emissions of CHBr3 and CH3I showed a significant contribution to their atmospheric abundances, atmospheric CH2Br2 appeared to be largely advected. Convective activity in the region can furthermore lead to low VSLS boundary layer mixing ratios despite high oceanic emissions.
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