CO2 monitoring is the process of measuring and tracking the levels of carbon dioxide in the atmosphere or in a specific environment. This is an important area of research as carbon dioxide is a greenhouse gas that contributes to global warming and climate change. Monitoring CO2 levels can help scientists understand and predict changes in the Earth's climate, as well as assess the impact of human activities on the environment. Various methods and technologies are used for CO2 monitoring, including sensors, satellites, and ground-based monitoring stations. The data collected from these monitoring efforts can be used to inform policy decisions, improve environmental sustainability, and develop strategies for mitigating the effects of climate change.