This week, climate policy headlines from around the world include a new study that ranks soot as the second-worst cause of climate change, an estimated $700 billion cost to avoid further temperature rise, and Germany’s solar development.
Study: Black carbon ranks as second-biggest human cause of global warming
Soot ranks as the second-largest human contributor to climate change, exerting twice as much of an impact as previously thought, according to an analysis released Tuesday.
The four-year, 232-page study of black carbon, published in the Journal of Geophysical Research: Atmospheres, shows that short-lived pollution known as soot, such as emissions from diesel engines and wood-fired stoves, has about two-thirds the climate impact of carbon dioxide. The analysis has pushed methane, which comes from landfills and other forces, into third place as a human contributor to global warming. Full article.