News just reached us of the death of renowned Arctic scientist Dr. David Barber, founder and Director of the Centre for Earth Observation Science (CERC) at the University of Manitoba, on April 15 at the age of 61. Although most known for his sea ice research, Dr. Barber’s work reached into all realms of Arctic science, especially within the Arctic Council’s Arctic Monitoring and Assessment Programme (AMAP) assessments of climate change impacts in the region. He leaves a rich video legacy of science talks, one of which (on “Atlantification” of the Arctic) is pasted below. David Barber’s work and mentorship of early career researchers, and dedication to communicating Arctic science to the policy world, will be greatly missed. Our sincere condolences to his family and colleagues.