Assessing the effect of marine isoprene and ship emissions on ozone, using modelling and measurements from the South Atlantic Ocean
| Type | Article | ||||||||
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| Date | 2010 | ||||||||
| Language | English | ||||||||
| Author(s) | Williams J.1, Custer T.1, Riede H.1, Sander R.1, Joeckel P.1, Hoor P.1, Pozzer A.1, 2, Wong-Zehnpfennig S.1, Beygi Z. Hosaynali1, Fischer H.1, Gros V.3, Colomb A.4, Bonsang B.3, Yassaa N.1, Peeken I.5, Atlas E. L.6, Waluda C. M.7, Van Aardenne J. A.8, Lelieveld J.1 | ||||||||
| Affiliation(s) | 1 : Max Planck Inst Chem, D-55128 Mainz, Germany. 2 : Cyprus Inst, Energy Environm & Water Res Ctr, CY-1645 Nicosia, Cyprus. 3 : Univ Versailles St Quentinen Yvelines, Lab Sci Climat & Environm, CEA, CNRS, F-91191 Gif Sur Yvette, France. 4 : Univ Paris 12, Lab Interuniv Syst Atmospher, CNRS, UMR 7583, F-94010 Creteil, France. 5 : Alfred Wegener Inst Polar & Marine Res, D-27570 Bremerhaven, Germany. 6 : Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, Miami, FL 33149 USA. 7 : British Antarctic Survey, NERC, Div Biol Sci, Cambridge CB3 0ET, England. 8 : Commiss European Communities, Inst Environm & Sustainabil, I-21020 Ispra, Italy. |
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| Source | Environmental Chemistry (1448-2517) (Csiro Publishing), 2010 , Vol. 7 , N. 2 , P. 171-182 | ||||||||
| DOI | 10.1071/EN09154 | ||||||||
| WOS© Times Cited | 17 | ||||||||
| Abstract | Ship-borne measurements have been made in air over the remote South Atlantic and Southern Oceans in January-March 2007. This cruise encountered a large-scale natural phytoplankton bloom emitting reactive hydrocarbons (e. g. isoprene); and a high seas squid fishing fleet emitting NOx (NO and NO2). Using an atmospheric chemistry box model constrained by in-situ measurements, it is shown that enhanced ozone production ensues from such juxtaposed marine biogenic and anthropogenic emissions. The relative impact of shipping and phytoplankton emissions on ozone was examined on a global scale using the EMAC model. Ozone in the marine boundary layer was found to be over ten times more sensitive to NOx emissions from ships, than to marine isoprene in the region south of 45 degrees. Although marine isoprene emissions make little impact on the global ozone budget, co-located ship and phytoplankton emissions may explain the increasing ozone reported for the 40-60 degrees S southern Atlantic region. | ||||||||
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