What may be the broadest and longest study to date has found Canada’s Arctic Ocean is growing more acidic up to four times faster than any other sea on the…
The acidification, linked to the loss of sea ice, will have unknown repercussions for the life in those waters, said Wei-Jun Cai, an oceanographer at the University of Delaware and co-author of the study in the journal Science.Sign up to receive daily headline news from Ottawa Citizen, a division of Postmedia Network Inc.By clicking on the sign up button you consent to receive the above newsletter from Postmedia Network Inc.
Cai’s study uses data on surface water from 47 different research cruises from 1994 to 2020 — some from the Chinese research icebreaker the Xue Long — to give the most definitive picture of the changes in the Canada Basin, a vast stretch of ocean covering the entire western Arctic. As well, the volume of that ice melt is creating a layer of relatively fresh water atop the Canada Basin. Because that water isn’t as dense as saltier water, it tends to float on the surface and concentrate the acidity.
For example, Cai said there’s evidence to suggest that more acidic water makes toxins such as heavy metals more likely to be absorbed by plants and animals.
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