Study of the chemical reactions that occur in the Earth's troposphere.
Atmospheric composition: This includes the various gases and aerosols that make up the atmosphere, their sources and sinks, and how they interact with each other.
Atmospheric reactions: This involves the chemical reactions that occur in the atmosphere, including the formation and destruction of pollutants and the production of secondary pollutants.
Air pollution: This includes the sources, types, and health impacts of air pollution, as well as the regulations and policies aimed at reducing it.
Ozone chemistry: This focuses on the formation and destruction of ozone in the atmosphere, both in the troposphere and the stratosphere.
Acid deposition: This covers the formation and impacts of acid rain, which is caused by the deposition of acidic pollutants onto land and water surfaces.
Climate change: This includes the role of tropospheric chemistry in climate change, specifically the effects of greenhouse gases and other pollutants on global warming.
Aerosol chemistry: This covers the sources, types, and impacts of aerosols in the atmosphere, including their effects on climate, air quality, and human health.
Atmospheric modeling: This involves the use of computer models to simulate and predict atmospheric chemistry and its interactions with other physical and biological processes.
Remote sensing: This focuses on the use of satellite and ground-based instruments to measure and monitor atmospheric composition and chemistry.
Renewable energy: This includes the role of renewable energy sources, such as solar and wind, in reducing air pollution and its impacts on human health and the environment.
Ozone chemistry: The interactions between ozone and other atmospheric gases, including nitrogen oxides, hydrocarbons and chlorine compounds.
Radical chemistry: The formation, reactions and effects of highly reactive species in the troposphere, such as hydroxyl (OH) and peroxy radicals (RO2).
Aerosol chemistry: The processes that lead to the formation and transformation of atmospheric particles, including those that contribute to regional haze and smog.
Nitrogen cycle: The cycling of nitrogen through the atmosphere, including the conversion of nitrogen gas into nitrous oxide, nitric oxide and nitrogen dioxide.
Acid-base chemistry: The role of acids and bases in atmospheric chemistry, including the formation and dissolution of acid rain and other forms of precipitation.
Photochemistry: The role of sunlight in initiating and driving many atmospheric chemical reactions, including the formation and destruction of ozone and other reactive species.
Biogeochemistry: The interactions of atmospheric chemistry with biological processes, including the exchange of gases between the atmosphere and ecosystems.
Stratospheric chemistry: The chemical processes that occur in the layer of atmosphere above the troposphere, including the formation and depletion of ozone.
Urban air chemistry: The unique chemistry of air in urban environments, influenced by anthropogenic emissions and other factors.
Climate chemistry: The role of atmospheric chemistry in climate change, including the effects of greenhouse gases and other emissions on the Earth's energy balance.