Atmospheric chemistry is a branch of atmospheric science in which the chemical composition of the atmosphere and how it changes over time is studied. The atmosphere is a complex mixture of gases, particles, and living organisms that interacts with energy from the Sun to affect Earth’s climate. Atmospheric chemists work to understand these interactions and their impacts on human health, the environment, and climate.
The composition of Earth’s atmosphere has changed over time due to natural processes (such as outgassing from volcanoes) and human activities (such as burning fossil fuels). These changes can impact air quality, weather patterns, and climate. For example, increased levels of greenhouse gases in the atmosphere can trap more heat from the Sun, leading to an overall warming of Earth’s surface. Additionally, pollutants emitted into the air can interact with sunlight to create smog or ground-level ozone – both of which are harmful to human health.
Because atmospheric chemistry plays a role in so many aspects of our lives, research in this field is ongoing and constantly evolving. Scientists use a variety of tools – including satellites, balloons, aircrafts, computers models – to study atmospheric composition and how it changes over time. This research helps us better understand our planet and take steps to protect it for future generations.