AQMEII Phase 3 intends to answer Hemispheric Transport of Air Pollution (HTAP) scientific questions:
- What fraction of air pollution concentrations or deposition can be attributed to sources of contemporary anthropogenic emissions within the region as compared to extra-regional, non-anthropogenic or legacy sources of pollution?
- How do these fractions impact on human health, ecosystems and climate change?
- How sensitive are regional pollution levels and related impacts to changes in the sources of the various fractions?
- How will the various fractions and sensitivities defined above change as a result of expected air pollution abatement efforts or climate change?
- How do the availability, costs and impacts of additional emission abatement options compare across different regions?
Three research programs came together toward this scope: HTAP, AQMEII and MICS modelling experiments.