| the United Nations International Global Atmospheric Chemistry Project (IGAC), under the auspices of the International Geosphere-Biosphere Project (IGBP) | |
| the Arctic Monitoring and Assessment Program (AMAP)which is being conducted by 8 circumpolar nations (Canada, USA, Iceland, Denmark, Norway, Sweden, Finland and Russia). | |
| studies of the deposition of air toxics to the Great Lakes Basin under the Great Lakes Water Quality Agreement between Canada and the United States | |
| the United Nations Economic Commission for Europe (UN ECE) working groups on POPs and HMs | |
| the Canadian Arctic Research Project (CARP) | |
| the United Nations Environment Program |