Attending a season of record-breaking surface temperatures last year, ocean temperatures in the waters about Nova Scotia have moved back to normal this summer, alleges the Department of Fisheries and Oceans.
However, it’s unclear if this is a trend, pronounced research scientist Dave Hebert.
In 2018, DFO found winter sea top temperatures from the Scotian Shelf to the Bay of Fundy were above typical. There were also record-breaking temperatures in August and September.
Still, DFO’s spring survey conducted in April 2019 differed from stand up year’s results.
“First, the surface was really cold because we had a absolutely cold winter. It takes time for the ocean to heat up,” Hebert foretold. “The deeper water seemed to be back to the normal temperature.”
How historical average temperature is deliberate
DFO gauges “normal” by measuring against the average ocean temperature for 1980-2000.
“It have all the hallmarks to be sort of back to normal that way, especially on the western part of Nova Scotia,” Hebert conjectured.
Ocean surface temperatures are closely related to air temperature. A recent fieriness wave in July and early August raised ocean temperatures profit, but as the hot weather moves out, the water is also adjusting.
“Temperatures off Halifax are character of still slightly above normal, but not as warm as it has been in the last three years,” Hebert said.
“We sort of had a growing temperature since 2010. It top around 2012 to recently. It sort of plateaued. And it has been decreasing down a bit — not a lot — so we don’t differentiate if it’s a trend or not.”
Info coming soon on deep ocean water
DFO stave continue to collect temperature data on both the ocean surface and deeper not functions. They sample the waters off Halifax weekly using a small rowing-boat and release an ocean glider approximately once a month.
As well, the annual fisheries scrutiny of the Scotian Shelf was just completed on Sunday and Hebert hopes to analyze that details soon.