Document Type
Article
Department/Program
Virginia Institute of Marine Science
Publication Date
2013
Journal
Geophysical Research Letters
Volume
40
Issue
15
First Page
3950
Last Page
3955
Abstract
The contribution of sea ice to the flux of biogenic volatile halogenated organic compounds to the atmosphere in the Southern Ocean is currently not known. To approach this question, we measured halocarbons in sea ice, sea ice brine, and surface water of the Amundsen and Ross Seas. Concentrations in sea ice of these compounds, normalized to seawater salinity, ranged from 0.2 to 810 pmol L-1. Salinity-normalized chlorophyll a concentrations in the ice ranged from 3.5 to 190 mu gL(-1). Our results suggest biological production of halocarbons in sea ice, with maxima of halogenated organics and chlorophyll a commonly found in the interior of the ice cores. Iodinated VHOCs were found to be more enriched in sea ice than brominated ones. Furthermore, depth distributions indicated a transport of halocarbons from sea ice to air and underlying water.
DOI
10.1002/grl.50777
Keywords
Boundary-Layer; Polar; Bromine
Recommended Citation
Granfors, A; Karlsson, A; Mattsson, E; Smith, Walker O. Jr.; and Abrahamsson, K, Contribution of sea ice in the Southern Ocean to the cycling of volatile halogenated organic compounds (2013). Geophysical Research Letters, 40(15), 3950-3955.
10.1002/grl.50777
