Modelling of Mercury in the Arctic with the Danish Eulerian Hemispheric Model

A new 3-D mercury model has been developed within the Danish Arctic Monitoring and Assessment Programme (AMAP). The model is based on the Danish Eulerian Hemispheric Model, which in the original version has been used to study the transport of SO 2 , SO 4 2- and Pb into the Arctic. It was developed f...

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Bibliographic Details
Main Authors: J. H. Christensen, J. Brandt, L. M. Frohn, H. Skov
Format: Article in Journal/Newspaper
Language:English
Published: Copernicus Publications 2004
Subjects:
Physics
QC1-999
Chemistry
QD1-999
Arctic
AMAP
Online Access:https://doaj.org/article/86125db16d814301a6e5ad921ff00301
Description
Summary:A new 3-D mercury model has been developed within the Danish Arctic Monitoring and Assessment Programme (AMAP). The model is based on the Danish Eulerian Hemispheric Model, which in the original version has been used to study the transport of SO 2 , SO 4 2- and Pb into the Arctic. It was developed for sulphur in 1990 and in 1999 also lead was included. For the current study a chemical scheme for mercury has been included and the model is now applied to the mercury transport problem. Some experiments with the formulation of the mercury chemistry during the Polar Sunrise are carried out in order to investigate the observed depletion. Some of the main conclusions of the work described in this paper are that atmospheric transport of mercury is a very important pathway into the Arctic and that mercury depletion in the Arctic troposphere during the Polar Sunrise contributes considerably to the deposition of mercury in the Arctic.

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