1. Institute of Ocean Sciences, Fisheries and Oceans Canada, Sidney, British Columbia, Canada
2. School of Earth and Ocean Sciences, University of Victoria, Victoria, British Columbia, Canada
3. Alfred-Wegener Institute for Polar and Marine Research, Bremerhaven, Germany
4. Canadian Centre for Climate and Modelling Analysis, University of Victoria, Victoria, British Columbia, Canada
5. Applied Physics Laboratory, University of Washington, Seattle, Washington, USA