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How a heat dome is formed and why experts blame one for Europe's baking temperatures

How a heat dome is formed and why experts blame one for Europe's baking temperatures

Summary

Europe is experiencing an early heat wave caused by a weather pattern called a heat dome, which traps hot air over the region. This has led to record-high temperatures, health risks, and even deaths, with climate change making such heat waves more common and intense.

Key Facts

  • A heat dome is a high-pressure system that stays in one place and traps heat and humidity.
  • It forms from a bulge in the jet stream, a fast-moving wind high in the atmosphere.
  • The heat dome causes the air to sink and compress, raising temperatures on the ground.
  • Several European countries, including France, Italy, Spain, and the UK, are facing very hot weather this week.
  • France has half the country under a red heat alert and has reported about 40 drowning deaths as people seek relief.
  • Climate change increases the frequency, intensity, and duration of heat waves by raising average temperatures worldwide.
  • Experts advise people to drink water, avoid exercise during the hottest hours, find shade, and cool off safely, especially focusing on getting relief at night.
  • Some events in France, such as trains, concerts, and sports, have been canceled to protect people during the heat wave.
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