
Glacier mass losses are pronounced in the Arctic, where ice discharge from tidewater glaciers accounts for approximately half of the total mass loss from the Greenland Ice Sheet. Icebergs produced in these regions may present significant risks to vessels operating in iceberg infested waters, such as the Newfoundland and Labrador coast. However, these risks are currently poorly understood and gaps remain in understanding how iceberg distribution is changing over time, how this impacts the routing and efficiency of shipping in major corridors, and whether iceberg hazards to shipping are evolving in a warming climate. In this study we use remote sensing data and ice charts from the Canadian Ice Service, International Ice Patrol, and Danish Meteorological Institute to evaluate the known southern limit of icebergs offshore eastern Canada and in the North Atlantic, and how this has changed over the last 30 years in conjunction with the location and distribution of icebergs. Ship and iceberg interactions are explored using satellite-based Automatic Identification System data from the past decade. This information is used to measure vessel traffic and evaluate how ships change their routing to avoid iceberg infested waters, from which the additional CO2 emissions created by these changes in transit distance can be computed. These methods provide a comprehensive analysis of both iceberg climatology in eastern Canada and its socio-economic impact on shipping activities.
1125 Colonel By Dr
Ottawa ON K1S 5B6
Canada