The impact of organochlorines cycling in the cryosphere on their global distributions and fate – 1. Sea ice

GUGLIELMO, F., I. STEMMLER and Gerhard LAMMEL. The impact of organochlorines cycling in the cryosphere on their global distributions and fate – 1. Sea ice. Environmental Pollution. OXFORD, ENGLAND: ELSEVIER SCI LTD, 2012, vol. 162, MARCH, p. 475-481. ISSN 0269-7491. Available from: https://dx.doi.org/10.1016/j.envpol.2011.09.039.

Basic information

• Original name: The impact of organochlorines cycling in the cryosphere on their global distributions and fate – 1. Sea ice
• Authors: GUGLIELMO, F. (276 Germany), I. STEMMLER (276 Germany) and Gerhard LAMMEL (276 Germany, guarantor, belonging to the institution).
• Edition: Environmental Pollution, OXFORD, ENGLAND, ELSEVIER SCI LTD, 2012, 0269-7491.

Other information

• Original language: English
• Type of outcome: Article in a journal
• Field of Study: 10511 Environmental sciences
• Country of publisher: United Kingdom of Great Britain and Northern Ireland
• Confidentiality degree: is not subject to a state or trade secret
• Impact factor: Impact factor: 3.730
• RIV identification code: RIV/00216224:14310/12:00059635
• Organization unit: Faculty of Science
• Doi: http://dx.doi.org/10.1016/j.envpol.2011.09.039
• UT WoS: 000301087800060
• Keywords in English: Persistent organic pollutants; Global cycling; Sea ice; Modelling
• Tags: AKR, rivok

Abstract

Global fate and transport of gamma-HCH and DDT was studied using a global multicompartment chemistry-transport model, MPI-MCTM, with and without a dynamic sea ice compartment. The MPI-MCTM is based on coupled ocean and atmosphere general circulation models.Sea ice hosts 7-9% of the burden of the surface ocean. Without cycling in sea ice the geographic distributions are shifted from land to sea. This shift of burdens exceeds the sea ice burden by a factor of approximate to 8 for gamma-HCH and by a factor of approximate to 15 for DDT. As regional scale seasonal sea ice melting may double surface ocean contamination, a neglect of cycling in sea ice (in an otherwise unchanged model climate) would underestimate ocean exposure in high latitudes. Furthermore, it would lead to overestimates of the residence times in ocean by 40% and 33% and of the total environmental residence times, tau(overall), of gamma-HCH and DDT by 1.6% and 0.6%, respectively.

Links

• ED0001/01/01, research and development project: Name: CETOCOEN