Every day, large quantities of volatile organic compounds (VOCs) are emitted to the atmosphere from both anthropogenic and natural sources. These substances influence local, regional and even global photochemistry and several of them in addition have a potential impact of the climate, due to their properties as greenhouse gases and as well ability to form aerosol particles on oxidation. Read more..
Volcanism is a term used to describe the phenomena of volcanic activity. Large volcanic eruptions spew massive amounts of ash into the atmosphere that absorb solar radiation, thus potentially generating a cooling effect on planetary temperatures. Read more..