Atmospheric bromoform at Cape Point, South Africa: an initial fixed-point data set on the African continent

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dc.contributor.authorKuyper, Brett
dc.contributor.authorPalmer, Carl J.
dc.contributor.authorLabuschagne, Casper
dc.contributor.authorReason, Chris J. C.
dc.date.accessioned2019-10-22T06:32:31Z
dc.date.available2019-10-22T06:32:31Z
dc.date.issued2018
dc.description.abstractBromoform mixing ratios in marine air were measured at Cape Point Global Atmospheric Watch Station, South Africa. This represents the first such bromoform data set recorded at this location. Manual daily measurements were made during a month-long field campaign (austral spring 2011) using a gas chromatograph-electron capture detector (GC-ECD) with a custom-built front end thermal desorption trap. The measured concentrations ranged between 4.4 and 64.6 ( 22.2 %) ppt with a mean of 24.8 14.8 ppt. The highest mixing ratios recorded here occurred at, or shortly after, low tide. The diurnal cycle exhibited a morning and evening maximum with lower concentrations throughout the rest of the day. Initial analysis of the data presented indicates that the local kelp beds were the dominant source of the bromoform reported. A concentration-weighted trajectory analysis of the bromoform measurements suggests that two offshore source areas may exist. These source areas appear to be centred on the Agulhas retroflection and extend from St Helena Bay to the southwest.en_US
dc.identifier.citationKuyper, B., Palmer, C.J., Labuschagne, C. & Reason, C.J. C. (2018). Atmospheric bromoform at Cape Point, South Africa: an initial fixed-point data set on the African continent. Atmospheric Chemistry and Physics, 18(8), 5785–5797. https://doi.org/10.5194/acp-18-5785-2018en_US
dc.identifier.issn1680-7324
dc.identifier.urihttps://doi.org/10.5194/acp-18-5785-2018
dc.identifier.urihttp://hdl.handle.net/10566/5058
dc.language.isoenen_US
dc.publisherEGUen_US
dc.subjectAtmospheric bromoformen_US
dc.subjectCape Point Global Atmospheric Watch Stationen_US
dc.subjectGas chromatograph-electron capture detector (GC-ECD)en_US
dc.subjectSt Helena Bayen_US
dc.subjectAfricaen_US
dc.titleAtmospheric bromoform at Cape Point, South Africa: an initial fixed-point data set on the African continenten_US
dc.typeArticleen_US

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