Atlantic Canada ocean temperatures set records again in 2022
Waves pound the shore in Eastern Passage, N.S. on Saturday, Sept. 24, 2022, during post-tropical storm Fiona. Fiona churned up seas and lowered the surface temperatures by 6 C over a two-week period — yet those temperatures still reached new highs.
Fisheries and Oceans uses 45 indices — a combination of multiple indicators — to measure ocean conditions related to temperatures in the Gulf of Maine south of Nova Scotia, the Scotian Shelf, the Gulf of St. Lawrence and off Newfoundland and Labrador.The data is gathered using shipboard measurements, gliders, fixed and floating buoys and satellites.
Meanwhile, deeper water set high temperature records at 150, 200, 250 and 300 metres, crossing the 7 C threshold for the first time.Peter Galbraith is a DFO research scientist in Mont Joli, Que.Warmer water originating from the Gulf Stream is now dominant in deeper layers and the deepest channels have seen large decreases in oxygen levels.
Warm water is expected to endure for years in the Gulf of St. Lawrence and Scotian Shelf, according to DFO.Why recent water temperatures in the North Atlantic have scientists buzzing
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