black carbon overlooked

Study: Modern clean diesels not that green; black carbon overlooked:

Each effect will vary from vehicle to vehicle but the point is they are not accounting for this [black carbon]. The claim that barely detectable black carbon causes no warming is misinformation.
http://green.autoblog.com/2011/05/03/study-modern-clean-diesels-not-that-green-black-carbon-overloo/

"Diesel Cars and Environmental Impact According to the research at Standford University, Despite lower carbon dioxide emissions, diesel cars may promote more global warming than gasoline cars Laws that favor the use of diesel, rather than gasoline, engines in cars may actually encourage global warming, according to a new study. Although diesel cars obtain 25 to 35 percent better mileage and emit less carbon dioxide than similar gasoline cars, they can emit 25 to 400 times more mass of particulate black carbon and associated organic matter ("soot") per kilometer [mile]. The warming due to soot may more than offset the cooling due to reduced carbon dioxide emissions over several decades, according to Mark Z. Jacobson, associate professor of civil and environmental engineering at Stanford University."

https://news.stanford.edu/pr/02/jacobsonJGR1023.html

"The warming due to soot may more than offset the cooling due to reduced carbon dioxide emissions over several decades, according to Mark Z. Jacobson, associate professor of civil and environmental engineering at Stanford University."
https://www.tnp.no/norway/economy/3257-diesel-car-owners-will-pay-extra-in-norway