Sunlight in Clouds Creates Hidden Oxidants, Scientists Reveal Atmospheric Chemistry Breakthrough with Global Implications Hydroperoxides are powerful oxidizing agents that play a crucial role in atmospheric chemistry. An international research team, including scientists from the Leibniz Institute for Tropospheric Research (TROPOS), has now revealed that these compounds can also form from α -keto acids such as pyruvic acid in clouds, rain and aerosol water when exposed to sunlight . The researchers estimate that these reactions could account for between 5 and 15% of hydrogen peroxide ( H₂O₂ ) observed in the atmosphere's aqueous phase. Published in Science Advances , the findings identify the photolysis of α -keto acids as a previously unrecognized source of atmospheric oxidants. Because such oxidation processes affect both the formation and breakdown of airborne particles and pollutants, the discovery has important implications for air-quality and climate modellin...
Explore the causes of climate change and their impact on our planet. Understand the factors contributing to global warming, such as greenhouse gas emissions, deforestation, and industrial activities. Discover the scientific research and evidence behind climate change and gain insights into the urgent need for collective action to mitigate its effects. Stay informed about the latest developments and solutions to address this critical environmental issue.