Hemispheric Transport of Air Pollution 2010

Part B - Mercury

image of Hemispheric Transport of Air Pollution 2010
This is one part of a four-volume set that presents a state-of-the-science assessment of the intercontinental transport of air pollutants across the Northern Hemisphere. The first three volumes are technical assessments of the state-of-science with respect to intercontinental transport of ozone and particulate matter, mercury, and persistent organic pollutants. The fourth volume is a synthesis of the main findings and recommendations of Parts A, B, and C organized around a series of policy-relevant questions that were identified at the Task Force on Hemispheric Transport of Air Pollution’s first meeting.



Global and regional modelling

Chemical transport modelling is a universal tool of mercury pollution assessment. Its role is particularly important for the evaluation of atmospheric mercury dispersion over long distances, taking into account the limited coverage of existing monitoring networks (see Chapter B2). In particular, model simulations provide estimates of mercury ambient concentration and deposition on global and regional scales, evaluation of intercontinental transport and forecasts of future pollution changes. Thus, application of chemical transport models can supplement direct measurements, giving more comprehensive and detailed information on mercury pollution.


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