The aerosol particles that serve as seeds for cloud formation are major drivers of global climate change. However, the sources and chemical processes behind the formation of these particles are unclear. Researchers have now found that carbon-based compounds from natural biological sources drive the formation of new particles. These sources play key roles in producing the large number of small particles in the atmosphere above the Amazon rainforest.
Researchers reporting in ACS’ Environmental Science & Technology have estimated that, although so-called environmentally friendly fireworks emit 15–65% less particulate matter than traditional fireworks, they still significantly deteriorate air quality.
Researchers reporting in ACS’ Environmental Science & Technology Letters have detected light-absorbing “tarballs” in the Himalayan atmosphere, which could contribute to glacial melt.
Little is known about how ocean microbes affect climate. Now, scientists report that pollution can change molecules released to the atmosphere by ocean microbes. They present their results today at the American Chemical Society Fall 2020 Virtual Meeting & Expo.
Contrails — the white, fluffy streaks in the sky that form behind planes — can harm the environment. Now, scientists report in ACS’ Environmental Science & Technology that small flight path adjustments could reduce the climate impact of these emissions.