The chemistry of the Earth's troposphere, including the formation and transformation of pollutants and other chemical reactions.
Chemical composition of the atmosphere: This topic covers the various gases and pollutants present in the atmosphere, their sources, and their concentrations.
Photochemistry: This topic covers the chemical reactions that occur in the atmosphere due to the interaction of sunlight with gases and particles.
Air pollution: This topic covers the sources and effects of air pollutants, such as ozone, particulate matter, and nitrogen oxides.
Acid rain: This topic covers the chemical reactions that lead to the formation of acid rain and its effects on the environment and human health.
Stratospheric chemistry: This topic covers the chemistry of the ozone layer, its destruction by human-made compounds, and its impact on climate change.
Climate change: This topic covers the role of tropospheric chemistry in climate change, including the influence of air pollutants and greenhouse gases on the Earth's climate.
Aerosols: This topic covers the physical and chemical properties of particles suspended in the atmosphere, as well as their sources and effects.
Atmospheric modeling: This topic covers the use of computer models to simulate atmospheric chemistry and predict future changes.
Transport and diffusion: This topic covers the movement of pollutants and other materials through the atmosphere due to wind currents and other factors.
Human health: This topic covers the effects of air pollutants on human health, including lung diseases, heart disease, and cancer.
Air pollution chemistry: Studies the chemical reactions and processes that occur in the atmosphere due to anthropogenic and natural emissions of pollutants such as sulfur dioxide, nitrogen oxides, and volatile organic compounds.
Stratospheric ozone chemistry: Focuses on the formation and destruction of ozone in the stratosphere, including the effects of anthropogenic emissions of halogenated compounds on the ozone layer.
Aerosol chemistry: Examines the chemical properties and interactions of atmospheric aerosols, including their role in climate change, air quality, and human health.
Cloud chemistry: Investigates the chemical processes that occur within clouds, including the formation of precipitation and the chemical reactions that occur between aerosols and cloud droplets.
Boundary layer chemistry: Studies the chemical processes that occur at the interface between the atmosphere and the Earth's surface, including the exchange of gases and particles between the two.
Urban and regional air quality: Focuses on the chemistry of the atmosphere in urban and suburban areas, including the sources and impacts of pollutants such as particulate matter and ozone.
Atmospheric modeling: Uses mathematical models to simulate the chemical processes that occur in the atmosphere, including the transport of pollutants and the formation of ozone and other air pollutants.
Biogeochemical cycles: Studies the chemical reactions and processes that occur in the atmosphere as part of global biogeochemical cycles, including the cycling of carbon, nitrogen, and sulfur.
Radiation chemistry: Investigates the chemical reactions that occur when atmospheric gases are exposed to radiation, including the formation of ozone and other reactive species.
Remote sensing: Uses satellite and ground-based instruments to measure atmospheric composition and chemistry, including the concentration of pollutants and the distribution of ozone and other atmospherically important species.