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Climate change makes heat wave in June in NS ‘more likely’

Climate change makes heat wave in June in NS ‘more likely’
Climate change makes heat wave in June in NS ‘more likely’


The humid heat wave that swept across parts of Nova Scotia and Halifax in late June was “more likely” made by climate change, Environment Canada experts said.

The record breaking heat saw temperatures rises to 34.5 degrees, setting a new record for June 20. Humidex readings in many parts of the province felt closer to 40 degrees.

Climate change has caused the world to become increasingly vulnerable, according to a unique analysis by the government’s weather bureau heat wave two to ten times more likely.

At a press conference on Tuesday, experts said Environment Canada could be one of the first government agencies to roll out a rapid attribution tool that would help officials determine how climate change has affected a heat wave.

Researchers run climate models under two scenarios, one based on a simulation of a pre-industrial climate and another based on a simulation of the climate we have now. They then compare the results to an observed heat wave to see how much it was influenced by human-caused global warming.

Officials said they will eventually apply the program to other extremes, such as precipitation and wildfires.

The analysis follows new results showing that June was the 13th consecutive month with record temperatures globally.

The heat affected much of eastern Ontario, Quebec and the Atlantic provinces.

With files from The Canadian Press.