UNITED NATIONS ECONOMIC COMMISSION FOR EUROPE

1. CONVENTION ON LONG-RANGE TRANSBOUNDARY AIR POLLUTION First meeting of the Task Force on Hemispheric Transport of Air Pollution Brussels, 1 – 3 June 2005 Harald Dovland Chairman, Executive Body CLRTAP UNITED NATIONS ECONOMIC COMMISSION FOR EUROPE

2. TASK FORCE ON HEMISPHERIC TRANSPORT • In the 1950s we were concerned about very local, urban problems – London, Meuse Valley • In the 1970s we lifted our sights and became aware of regional problems of acidification and photochemical ozone – Europe, USA/Canada • Both of these latter problems required some ground-breaking science to establish the fact that pollution problems could exist on these scales UNITED NATIONS ECONOMIC COMMISSION FOR EUROPE

3. TASK FORCE ON HEMISPHERIC TRANSPORT • We have now begun to look even further across the whole northern hemisphere, even the globe • But we are still at the position of establishing the scientific basis of the problem • The Task Force is thus a scientific body • But it will address questions that are ultimately relevant to policy makers UNITED NATIONS ECONOMIC COMMISSION FOR EUROPE

4. TASK FORCE ON HEMISPHERIC TRANSPORT • The UNECE/CLRTAP has a history of developing a sound scientific base to policy development and thus provides a very appropriate framework for this new Task Force

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6. TASK FORCE ON HEMISPHERIC TRANSPORT • The scientific issues are complex, but the questions will be answered • What are the next steps? We need to be planning for this now