On Friday 25 November 2016, as part of the programme for Ljubljana, European Green Capital 2016, City Hall was the venue of a presentation of the results of research into black carbon, conducted as part of the global mission GreenLight WorldFlight 2012 – 2016.
Apart from carbon dioxide, black carbon is the most important cause of global warming and thus a significant contributor to climate change. The main sources of black carbon are wood burning and traffic. The research results were presented by Matevž Lenarčič, Aerovizija, and Asst Prof Dr Griša Močnik, Aerosol and the Jožef Stefan Institute.
Numerous measures being taken in Ljubljana that arise from our vision of sustainable development demonstrate our commitment to the principle of solidarity with generations yet to come. Therefore, we are already laying the foundations for a healthy and clean environment for the future and as part of the presentation of research results there was also a presentation of local measures to improve air quality in Ljubljana. The data highlights that by changing the traffic regime on Slovenska cesta we have achieved exceptional improvements in air quality: concentrations of black carbon above background levels have been reduced by up to 70% with no increases recorded on neighbouring streets.
“In cities where the main pollutant is the motor vehicle, it would be best to exclude vehicles which, due to age, lack of maintenance or other causes, are the least fuel efficient. If 25% were removed, this would be reflected in air quality by 60%”.
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