Pacific Northwest heat wave was ‘virtually impossible’ without climate change, scientists find

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Pacific Northwest heat wave was ‘virtually impossible’ without climate change, scientists find HOME - ALL POSTS - ... - PACIFIC NORTHWEST HEAT WAVE WAS ‘VIRTUALLY...

©Ashley Cooper

The unprecedented episode was made at least 150 times as likely by rising temperatures, according to a rapid analysis By all estimates, last week’s heat wave in the Pacific Northwest and British Columbia was essentially unprecedented. Seattle hit 108 degrees, Portland spiked to 116 and Canada broke its national temperature record three days in a row, hitting 121 degrees on June 29. Hundreds of excess deaths were blamed on the brutal heat, which established records by margins of 10 degrees or more in spots. This was not “just another heat wave,” Christopher Burt, an expert on world weather extremes, wrote in a Facebook message, but rather “the most anomalous extreme heat event ever observed on Earth since records began two centuries ago.” An analysis conducted by the World Weather Attribution group, which specializes in using computer modeling to examine the links between ongoing weather events and climate change, finds that the extreme heat wave would have been “virtually impossible” without human influence. “I want the public to know that climate change has already affected extreme weather in a big way, especially heat waves,” Michael Wehner, a senior scientist at the Lawrence Berkeley National Laboratory and a contributor to the analysis, wrote in an email. “Global warming is not our grandchildren’s problem; it is ours, here and now.” Another intense heat wave to roast Western U.S., southwest Canada The analysis concluded that a robust relationship exists between top-tier heat extremes and human-caused climate change, stating that greenhouse gas emissions made the heat wave at least 150 times more likely to occur. Twenty-seven scientists from more than half a dozen countries, including Canada, the United States, Germany, the Netherlands, Switzerland, France and the United Kingdom, worked on the attribution study. Please click on the link below to read full article: Link Here Resource management institute

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