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Climate change is responsible for the weather that caused Iberian fires, according to a report

According to an analysis conducted by World Weather Attribution, the hot, dry, and windy conditions that caused Spain's worst wildfires for at least 30 years are 40 times as likely to occur again due to climate change.

World Weather Attribution, an international collaboration, has carried out over 110 studies to determine the influence of climate changes on extreme weather events.

A group of 13 scientists analysed weather data and found that extreme conditions which caused the fires that occurred in the Iberian Peninsula's northwest, including Portugal, last month, are likely to occur every 15 years because of today's climate.

Climate is now 1.3 degrees Celsius warmer than pre-industrial levels, when similar events were expected every 500 years.

In the European Union, forest fires have destroyed more than one million hectares in this summer. Spain and Portugal accounted for two-thirds.

At least eight people were killed in the fires, which forced thousands to evacuate and halted rail and auto traffic in many areas. The fires coincided with the longest heatwave in history, lasting 16 days.

Theodore Keeping is a researcher with the Centre for Environmental Policy Imperial College London.

He added that "for wildfires there is an urgent need to manage vegetation in rural areas," especially land that had been abandoned by shepherds and farmers. "In the end, however, we need to stop burning coal, oil and gas."

The study concluded that heatwaves with similar intensity would occur every 13 to 2,500 years, if man-made climate changes did not exist.

Scientists analysed a daily severity rating (DSR) that takes into account temperature, humidity, windspeed and rain in order to determine the intensity and difficulty of an upcoming wildfire.

The study concentrated on the 10 most intense DSR days every year, and the 10 hottest summer days in northwestern Spain. (Reporting and editing by Andrei Khalip, Gareth Jones and Charlie Devereux)

(source: Reuters)