"The collective effects of anthropogenic climate change and artificial pond drainage may have played an important role in producing the extreme flood that occurred during early summer 2014 on the southeastern Canadian Prairies."

"Analysis results indicate that the 2015 extreme drought in western Canada was likely an outcome of anthropogenically influenced warm spring conditions and naturally forced dry weather from May to July."

"The combined effect of anthropogenic and natural forcing is estimated to have made extreme fire risk events in the region 1.5 to 6 times as likely compared to a climate that would have been with natural forcings alone."

"Cold outbreaks like this are getting warmer (less frequent) due to global warming, but cold waves still occur somewhere in North America almost every winter."

"Extreme vapor pressure deficits (VPD) have been associated with enhanced wildfire risk. Using one model, we found for 2015/16 that human influences quintupled the risk of extreme VPD for western North America and increased the risk for extratropical Australia."

"We show over 95% of the probability for the observed maximum temperature anomalies is due to anthropogenic factors, that the event's high fire weather/behaviour metrics were made 2–4 times more likely, and that anthropogenic climate change increased the area burned by a factor of 7–11."

"The 2016 Alaska marine heat wave was unprecedented in terms of sea surface temperatures and ocean heat content, and CMIP5 data suggest human-induced climate change has greatly increased the risk of such anomalies."

"Two of the longest and most intense marine heat waves in 2016 were up to fifty times more likely due to anthropogenic climate change."

"Anthropogenic forcing increased the likelihood of the 30-day high rainfall over Ontario and Quebec that contributed to the 2019 Ottawa River floods by a factor of 2 to 3."

"No significant effect" of human-caused climate change identified.

"Three snow-induced floods were enhanced [by climate change] (the Fraser in 2012, Sava in 2010, and Volga in 2012), which is due to increased precipitation."

"No significant effect" of human-caused climate change identified.

"No significant effect" of human-caused climate change identified.

"The multimodel mean anthropogenic climate change trends account for 42% of the southwestern North America soil moisture anomaly in 2000-21 and 19% in 2021."

For two-day rainfall, "the probability of events at least this large has been increased by a best estimate of 45% by human-induced climate change."

"Climate change made the cumulative severity of Québec’s 2023 fire season to the end of July around 50% more intense, and seasons of this severity at least seven times more likely to occur."

"[P]erturbed CO2 experiments illuminate increases in CO2, causing a [lower] chance for [cold] extremes. "

"[W]e…show that human influence on the climate made this event at least 8 [2–50] times more likely."

"The fire weather conditions in Canada during June 2023 were 2.9–3.6 times more likely due to anthropogenic forcing."