Brown carbon ‘tarballs’ detected in Himalayan atmosphere

Science Daily  November 4, 2020
Primary brown carbon (BrC) co-emitted with black carbon from biomass burning is an important light-absorbing carbonaceous aerosol. An international team of researchers (China, USA – Georgia Institute of Technology, UK, Hungary) detected light-absorbing tarballs at microscopic scale collected on the northern slope of the Himalayas. About 28% of thousands of individual particles were tarballs. Air mass trajectories, satellite detection, and Weather Research and Forecasting model coupled to Chemistry (WRF-Chem) simulations all indicated that these tarballs were emitted from biomass burning in the Indo-Gangetic Plain. According to the researchers climate model simulation shows a significant heating effect (+0.01–4.06 W/m2) of the tarballs in the Himalayan atmosphere; they conclude that the tarballs can be an important factor in the climatic effect and would correspond to a substantial influence on glacial melting in the Himalaya region…read more. TECHNICAL ARTICLE

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