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Iodine emissions from the sea ice of the Weddell Sea

2012

Iodine compounds were measured above, below and within the sea ice of the Weddell Sea during a cruise in 2009, to make progress in elucidating the mechanism of local enhancement and volatilisation of iodine. I<sub>2</sub> mixing ratios of up to 12.4 pptv were measured 10 m above the sea ice, and up to 31 pptv was observed above surface snow on the nearby Brunt Ice Shelf – large amounts. Atmospheric IO of up to 7 pptv was measured from the ship, and the average sum of HOI and ICl was 1.9 pptv. These measurements confirm the Weddell Sea as an iodine hotspot. Average atmospheric concentrations of CH<sub>3</sub>I, C<sub>2</sub>H<sub>5</sub>I, CH&l…

0106 biological sciencesAtmospheric Science010504 meteorology & atmospheric sciencesIodidechemistry.chemical_element010501 environmental sciencesIodine01 natural sciencesIce shelflcsh:Chemistrychemistry.chemical_compoundSea iceIodate0105 earth and related environmental scienceschemistry.chemical_classificationgeographygeography.geographical_feature_category010604 marine biology & hydrobiologyFirnSnowlcsh:QC1-999ChemistryOceanographylcsh:QD1-999chemistry13. Climate actionSeawaterlcsh:PhysicsAtmospheric Chemistry and Physics
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