A meteorologist studies the Earth’s atmosphere and weather patterns. They use data from weather instruments such as radar, satellite imagery, and weather balloons, as well as computer models, to make predictions about future weather conditions. They also analyze historical weather data to identify patterns and trends. They also study the underlying causes of weather patterns and the impact of human activities such as pollution and climate change on the atmosphere. They also study long-term climate trends and their impact on the environment. They also study the relationship between weather and climate, and how they interact with each other. They also study the impacts of climate change on various systems, such as the ocean, ice sheets, and ecosystems, as well as the impacts on human communities and economies.