English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

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

MPS-Authors
/persons/resource/persons37166

Guglielmo,  F.
The Land in the Earth System, MPI for Meteorology, Max Planck Society;

Locator
There are no locators available
Fulltext (public)
There are no public fulltexts available
Supplementary Material (public)
There is no public supplementary material available
Citation

Guglielmo, F., Stemmler, I., & Lammel, G. (2012). The impact of organochlorines cycling in the cryosphere on their global distribution and fate - 1. Sea ice. Environmental Pollution, 162, 475 -481. doi:10.1016/j.envpol.2011.09.039.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000F-48C1-3
Abstract
Global fate and transport of γ-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 ≈8 for γ-HCH and by a factor of ≈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, τ overall, of γ-HCH and DDT by 1.6% and 0.6%, respectively. © 2011 Elsevier Ltd. All rights reserved.