CO2 concentration

CO₂ concentration refers to the amount of carbon dioxide gas present in the atmosphere, usually measured in parts per million (ppm). It indicates how much CO₂ is in the air relative to other gases and reflects the balance between sources, like burning fossil fuels, and sinks, such as oceans and forests that absorb it. Higher CO₂ levels contribute to global warming by trapping more heat in the atmosphere. Monitoring these levels helps scientists understand climate change trends and assess the impact of human activities on the Earth's climate system.