1. Department of Chemistry, Umeå University, SE-901 87 Umeå, Sweden
2. Centre for Atmospheric Research
Experiments (CARE), Environment Canada,
6248 Eighth Line, Egbert, ON, L0L 1N0, Canada
3. Department of Fisheries and Oceans, Freshwater Institute, 501 University Crescent, Winnipeg,
MB, R3T 2N6, Canada
4. Centre
for Earth Systems Science, University of Manitoba, Winnipeg, MB, Canada
5. Department of Fisheries and Oceans, 561 Balmy Beach Road, Owen Sound, ON, N4K
5N4, Canada
6. Department of Fisheries
and Oceans, Institute of Ocean Sciences, 9860 West Saanich Road,
Sidney, BC, V8L 4B2, Canada