The total greenhouse gas (GHG) emissions caused directly or indirectly by a person, organization, event, or product. It is calculated by adding up the emissions from every stage of a product or service’s life cycle (material production, manufacturing, use, and end-of-life). Throughout a product’s service life or life cycle, different greenhouse gases such as carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O), each with varying abilities to trap heat in the atmosphere, can be emitted.
https://css.umich.edu/publications/factsheets/sustainability-indicators/carbon-footprint-factsheet
