Canicule : quel est l'impact du changement climatique sur les vagues de chaleur ?

euronews (en français)

Canicule : quel est l'impact du changement climatique sur les vagues de chaleur ?  Alors que l'Europe est frappé par un épisode caniculaire important pour un mois de juin, Euroverify a examiné les études établissant un lien entre le changement climatique d'origine humaine et des vagues de chaleur plus chaudes et plus persistantes.  LIRE L’ARTICLE : http://fr.euronews.com/2025/07/02/canicule-quel-est-limpact-du-changement-climatique-sur-les-vagues-de-chaleur  Abonnez-vous à notre chaine. Euronews est disponible sur Dailymotion en 12 langues

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00:00What is the link between climate change and heatwaves?

00:06As parts of Europe continue to swelter in soaring temperatures,

00:11we've spoken to climate experts to verify the link between climate change and heatwaves.

00:17A heatwave is a prolonged period, usually of at least three days, of much warmer than average weather.

00:23The heatwave threshold temperature varies across Europe,

00:26for example from 25 degrees Celsius in Helsinki to 39 degrees Celsius in Athens.

00:33These thresholds also vary within countries.

00:36Scientists do not directly attribute heatwaves to climate change.

00:40These episodes can happen regardless of rising global temperatures.

00:43But climate change is making heatwaves more frequent, more intense and longer lasting.

00:50Researchers at Carbon Brief have mapped every scientific study

00:53on how climate change has influenced extreme weather events,

00:57such as flooding, drought or heatwaves.

01:00These studies cover 116 heat-related events in Europe.

01:05Of those, 95% were scientifically deemed to have been made more severe

01:11or more likely because of climate change.

01:14This is why scientists say episodes of intense heat will probably become the new normal.

01:20Additional global warming may further increase the frequency and intensity of heatwaves.

01:26And Europe is vulnerable because it's the world's fastest warming continent.

01:31Other studies link Europe's heatwaves to double jet streams,

01:34which is when a band of very strong air coming from the west splits into two branches,

01:39leaving a mass of warm air over Europe.

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