Asian brown cloud | atmospheric science
Asian brown cloud, a large atmospheric brown cloud that occurs annually from about November through May over eastern China and southern Asia. The Asian brown cloud is caused by large amounts of aerosols (such as soot and dust) produced in the combustion of fossil fuels and biomass across the region. It has been linked to decreases in summer monsoon rainfall in India since 1930, the southward shift of the summer monsoon in eastern China, declines in agricultural production, and increases in respiratory and cardiovascular problems in the people inhabiting the region. The first observations of ...