Canadian delegation set to tell COP27 about oceans’ role in fighting climate change
Lying in plain sight and lapping against our shores is what scientists describe as an unsung hero that has been quietly absorbing heat and keeping the world’s temperatures under control. And over the coming days, a group of Canadian researchers hopes to persuade the world that the ocean has a crucial role to play in fighting climate change.
“But oceans hold more carbon than all the rainforests on Earth,” she said in an interview. “And deep blue carbon is carbon that’s held by the deep blue sea. So the open ocean, the high seas, which go down to 4000 meters in depth … they hold most of the carbon on Earth. And that’s something people really aren’t aware of.”
But there is a danger that these carbon sinks will turn to emitters as the waters warm, melting caps of frozen methane and other greenhouse gases that lie scattered on the sea floor, she said. Waite said such “blue carbon ecosystems” help retain emissions, in addition to enhancing biodiversity. But it is further offshore that the biggest carbon stores are to be found, she said.
“There’s a whole lot more shipping in the St. Lawrence, and those animals are now coming in contact with ships way more often, bringing an already endangered species to the brink of collapse,” Waite said.
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