As a Carbon footprint consultant In UAE, the total amount of different greenhouse gas emissions—of which carbon dioxide is the main component—that result from the decisions and activities of a person, group, or country is known as their "carbon footprint." Carbon dioxide (CO2) or carbon dioxide equivalent (CO2e) are common ways to express carbon footprint. Most greenhouse gases, including CO2 and methane (CH4), are released into the atmosphere due to processes including clearing land, burning fossil fuels, and producing and using a variety of goods and services.