Long-term measurements at the coastal stations Mace Head, Ireland (picture) and Zingst (Baltic Sea) have revealed evidence, that mercury concentrations in the atmosphere (that have increased continuously until the early 1990ies) have levelled out since then.
Since European and, to a lesser extent, North American emissions have been reduced drastically during the observation period, it can be assumed that more distant, probably Asian, sources have compensated western reductions and are supposed to increase further in the future, since mercury emissions into the atmosphere are strongly related to energy production and coal consumption.
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