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20 years of killer whale sightings in the eastern Canadian Arctic are analyzed, revealing a near doubling of their average seasonal presence from 26 days in 2002 to 48 days in 2023. The research links these distribution shifts to changing sea ice conditions, using a clustering metric based on the mean distance to the five nearest sightings. It draws from a sighting database spanning 1850-2023, though the core analysis focuses on the period from 2002 onward.
Data is provided in multiple formats including ESRI REST, PDF, and CSV; users should check format suitability. License is Canadian Open Government License (ca-ogl-lgo).