In a context of global warming which accentuates the frequency, duration and intensity of droughts, France recorded between September 2021 and April 2022 a rainfall deficit of 20%.

In particular, it has rained very little since the beginning of spring and “the monthly rainfall deficit even reaches 30% to 40% in February and March, and 25% in April”, according to a situation update posted on the Weather website. -France.

This deficit which threatens crops, especially wheat, is not unprecedented: it is comparable with the same period of 2018-2019.

And it affects the regions in different ways, with two-thirds of the territory experiencing “dry to very dry” soils. Thus, between September and April, rainfall deficits exceed 20% in the Grand-Est (27%), in the north of Nouvelle-Aquitaine (33%), in Brittany (25%), in the east of Provence- Alpes-Côte-d’Azur (30% throughout PACA) and Corsica (22%).

Over the past three months, the soils have remained extremely dry for the season in PACA, Corsica, the Massif Central, part of Burgundy, Grand-Est and Hauts-de-France, a “situation occurring on average one year in 25″, notes Météo-France.

According to the official Propluvia website, 15 departments, particularly in Brittany and PACA, have already implemented water restrictions.

France is experiencing a period of not exceptional heat this week but “remarkable so early in the year”, with temperatures which exceeded 30°C in certain regions on Wednesday and the heat is expected to continue until the middle of next week, according to Meteo-France.

Beyond that, forecasts are not possible, but “the most likely scenario” (50% probability) for the summer is the “continuation of drier and warmer than normal conditions” in general.

This scenario is in line with the drying up of soils in France since the beginning of the century, a trend which is accentuated with global warming.

France has experienced major drought episodes in recent decades (1976, 1989, 2003, 2011, etc.) with an increase in the frequency of drought episodes since the early 2000s, underlines Météo-France.

These episodes are also more intense and longer, and the proportion of the territory affected is greater (5% in the 1960s to 10% in recent years).


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