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Climate change will proceed faster than expected: Study

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London: Because increased temperature also affects greenhouse gas emissions that arise naturally, global warming will progress faster than what was previously believed, projects a new study.

The findings suggest a vicious circle of greenhouse gas emissions from the burning of fossil fuels lead to higher temperatures, which in turn lead to increased natural emissions and further warming.

This means that warming will be faster than expected from anthropogenic greenhouse gas emissions alone, the researchers noted.

“We are not talking about hypotheses anymore. The evidence is growing and the results of the detailed studies are surprisingly clear. The question is no longer if the natural emissions will increase but rather how much they will increase with warming,” said one of the researchers David Bastviken, a professor at Linkoping University in Sweden.

The researchers examined the emissions of the greenhouse gas methane from three lakes.

The effects were clear and the methane emissions increased exponentially with temperature.

Their measurements showed that a temperature increase from 15 to 20 degrees Celsius almost doubled the methane level.

“Everything indicates that global warming caused by humans leads to increased natural greenhouse gas emissions. Our detailed measurements reveal a clear pattern of greater methane emissions from lakes at higher temperatures,” study lead author Sivakiruthika Natchimuthu from Linkoping University pointed out.

The findings were published in the journal Limnology and Oceanography.

(IANS)

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Old Diesel Cars Banned From Summer 2019 In Greater Paris

Fifteen French metropolitan areas including Lyon, Nice, Aix-Marseille and Toulouse last month agreed to install or reinforce low-emission zones by 2020.

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Exhaust fumes escape from the exhaust of a diesel engine car in Paris. VOA

The Greater Paris region will become a low-emission zone from next summer, which will limit the circulation of old diesel cars, the regional authority decided on Monday.

The Metropole du Grand Paris council said on its Twitter feed it had voted to ban diesel cars registered before Dec. 31, 2000 from the area within the A86 second ring-road, which includes Paris and 79 municipalities around it, a region with 5.61 million inhabitants.

The ban will use France’s new “Crit’Air” vignette system, which identifies cars’ age and pollution level with color-coded stickers. Cars with the Crit’Air 5 sticker (1997 to 2000-registered diesels) as well as cars without a sticker will be banned.

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People cool themselves at the Trocadero Fountain in front of The Eiffel Tower in Paris on July 27, 2018, as a heatwave continues across northern Europe. VOA

The council plans to gradually tighten regulations in order to allow only electric or hydrogen-fueled cars on Greater Paris roads by 2030. In central Paris, pre-2000 diesels have been banned since July 2017.

Also Read: Paris Adopts Climate Action Plan, Aims At Achieving a ‘Zero Carbon’ Future

Fifteen French metropolitan areas including Lyon, Nice, Aix-Marseille and Toulouse last month agreed to install or reinforce low-emission zones by 2020. The French government hopes this will prevent European Union sanctions over non-respect of European air quality standards. (VOA)