Due to the combination of climate change and the “hot dome” of the atmosphere, resulting in the hottest temperature the region has experienced, the record heat wave in the western United States will intensify this weekend.
In the next few days, the heat wave will enter the Pacific Northwest, and forecasts show Seattle And Vancouver reached the highs of 41C and 39C respectively.
Seattle meteorologist Cliff Mass described the predictions of this area known for its cool and rainy weather as “incredible” and “crazy.”
“Frankly, I was a little shocked seeing the predictions of the original forecasting model,” wrote Mass, Professor of Atmospheric Sciences at the University of Washington.
Meteorologists warn that the heat wave may become more deadly because it enters the area northward, where most homes do not have air conditioning and people are not used to extreme heat.
Hundreds of temperatures recording In the past week, there were also shootings in Utah, Arizona, Colorado, New Mexico and California in the southwestern United States.
Climate scientists say that as global warming causes the earth to continue to heat up, these patterns may become the new normal. The world record high of 53.2C in June is recording Earlier this month in Death Valley, California.
“There is no doubt that heat waves have become more frequent and intense due to man-made climate change,” said Frederick Otto, deputy director of the Institute of Environmental Change at the University of Oxford.
“The most important thing is to be aware of how dangerous high temperatures are,” she added, noting in particular that the elderly are at risk.
Otto said that unusual temperatures combined with historic droughts have greatly increased the risk of wildfires.Parts of California and Oregon are ready for summer A fire that is more deadly than last year.
A high-pressure zone in the atmosphere over the western United States, often referred to as the “heat dome,” is locking the heat wave in place.
“This is a very durable weather system that can last for many days,” said Dim Coumou, a researcher at the Potsdam Institute for Climate Impact Research. “It brings a clear sky, a very high temperature[s]. “
Although climate change has warmed the earth by about 1.2 degrees Celsius since the pre-industrial era, scientists such as Coumou believe that it has also changed atmospheric patterns.
His research shows that the gradual weakening of summer jets makes these high-pressure systems more durable, leading to longer heat waves. Jets are fast-moving wind belts high in the atmosphere, which greatly affects weather patterns in the northern hemisphere.
“Normally, the weather system comes and goes every few days,” Coumou said. “The problem with these heat shields is that they can last longer. This kind of heat will really build up, and you will get these lasting heat waves.”
Other parts of the world also experienced record temperatures this month, including the Russian Arctic.
The area near Verkhoyansk, known as one of the coldest places in the world, recorded A new peak According to satellite data from the European Union’s Earth Observation Program Copernicus, the temperature on June 21 exceeded 40 degrees Celsius.
This exceeds the record of 38C recorded near Verkhoyansk last year.