A number of pollutants (e.g. Hg and some POPs) are characterized by long residence time in the atmosphere (up to one year) resulting in global character of there dispersion and ability to transport between the continents. Besides, cycling of these substances between different environmental media also facilitates their transport potential in longer perspective. Therefore, assessment of the environment pollution with such contaminants should be performed on a global scale taking into account possible contribution of intercontinental transport to regional pollution.

Examples of the global scale assessment of pollution levels of some heavy metals (Hg) and POPs (PCDD/F, PCB-153, HCB) are given below. More detailed information is available in the MSC-E reports, Presentations and TF HTAP activity.

 

Heavy metals

Mercury (Hg)

 

Simulated annual mean air concentration of Hg0 in 2014 over the old (left) and new (right) EMEP domains. Coloured circles show mercury observations from the EMEP monitoring network

Simulated annual mercury wet deposition flux in 2014 over the old (left) and new (right) EMEP domains. Coloured circles show mercury observations from the EMEP monitoring network

Simulated annual mercury total deposition flux in 2014 over the old (left) and new (right) EMEP domains

 

Persistent Organic Pollutants



Spatial distribution of modeled annual mean PCDD/F concentrations in air (fg TEQ/m3) obtained for 2014



Spatial distribution of modeled annual mean PCB-153 concentrations in air (pg/m3) obtained for 2014



Spatial distribution of global scale HCB emissions with spatial resolution 10x10 applied in model simulations for 2014

 

 

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