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Mega-heatwaves in France during the second half of the 21st century and the 50°C threshold

Margot Bador (post-doctoral research fellow at the Climate Change Research Center, Sydney, and CERFACS PhD), Laurent Terray (CERFACS researcher) and Julien Boé (CNRS researcher at CERFACS) with collaborators from Météo-France have published a study of France summer mega-heatwaves and associated temperature extremes that could occur at the end of the 21st century under the business as usual greenhouse gas emission scenario. The study  is based on regional climate simulations at very high spatial resolution (12km) performed with the ALADIN model developed at Météo-France. The authors have studied a simulated heatwave that occur in the 2070s when the mean France climate has already warmed by several degrees.  They find that  the simulated 2070 heatwave is as severe (in terms of amplitude and spatial extent) as the observed 2003 heatwave when compared to their respective mean climate.  They further show that late spring dry land conditions may lead to a significant amplification of summer temperature extremes and heatwave intensity through limitations in evapotranspiration. By 2100, the simulations suggest that the increase in summer temperature maximum records could reach 6 °C to 13 °C in the five considered France climatic regions, and therefore, exceed the 50°C threshold.

Link of the article on the site of the newspaper Environnemental Research Letters


A bronze medal to Cerfacs for “Allons-Y À Vélo” !

CERFACS |  26 July 2021

A bronze medal to Cerfacs for "Allons-Y À Vélo" ! Cerfacs is on the podium for its cycling regularity during the "Allons-Y À Vélo" period (May 25 - June 25) in its category (100-500 employees).During this period, 37% of Cerfacs employees came to work by bike during at least 4 consecutive days. "Allons-Y À Vélo" is a campaign organised by the association "2 Pieds 2 Roues" and "La Maison du Vélo de Toulouse" to promote the use of the bicycle for every day travels; all details can be found on allonsyavelo.le-pic.org . Cerfacs encourages its employees to use their bicycle to come to work as they benefit from the bicycle mileage allowance (FMD for Forfait Mobilité Durable) of up to 500 Euros per year.Read more

The H2OPE project wins the prize Joseph Fourier 2021

CERFACS |  26 July 2021

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