Study from Thuringia shows 50% of harmful soot comes from local sources, 50% from long-distance transport
Soot particles from oil and wood heating systems as well as road traffic can pollute the air in Europe on a much larger scale than previously assumed. This is what researchers from the Leibniz Institute for Tropospheric Research (TROPOS) conclude from a measurement campaign in the Thuringian Forest in Germany....
Source: greencarcongress.com