Six departments are placed on Thursday in orange vigilance for heatwaves. According to climatologist Hervé Le Treut, interviewed Thursday on Europe 1 "this warming problem is gradually becoming inexorable". And heat waves are destined to recur more and more frequently.

INTERVIEW

It was a very intense heat peak that hit France on Thursday. Six departments, Ardèche (07), Drôme (26), Isère (38), Rhône (69), Savoie (73) and Haute-Savoie (74), are on orange alert for heatwaves. But should this be seen as an illustration of global warming? Yes, confirms at the microphone of Europe 1 the climatologist Hervé Le Treut, who foresees, in the future, episodes of this type "more frequently than in the past".

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"When we have hot air coming from the south, it is hotter than before and in recent years we have seen peaks of heat with intense forest fires around the Mediterranean, in California, in the Amazon. . It's all over the world, ”he explains. 

"There will be no quick turning back" 

"The heat peaks from one year to the next, we cannot precisely anticipate where it will happen, how it will happen, with what intensity," continues Hervé Le Treut. "But what we know is that we are facing this warming problem which is gradually becoming inexorable because greenhouse gases accumulate in the atmosphere."

"There will be no rapid turning back," said the climatologist, according to whom "we must prepare for episodes that resemble those of today, more frequently than in the past".