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The carbon footprint explained Comparison of the carbon footprint of protein-rich foods [1]. A formal definition of carbon footprint is as follows: "A measure of the total amount of carbon dioxide (CO 2) and methane (CH 4) emissions of a defined population, system or activity, considering all relevant sources, sinks and storage within the spatial and temporal boundary of the population, system ...
The carbon footprint is a component of the total ecological footprint. Often, when only the carbon footprint is reported, it is expressed in weight of CO 2 (or CO2e representing GHG warming potential (GGWP)), but it can also be expressed in land areas like ecological footprints. Both can be applied to products, people, or whole societies.
The scale uses the global warming potential unit, the carbon dioxide equivalent (CO 2 e), and the unit of electrical energy, the kilowatt hour (kWh). The goal of such assessments is to cover the full life of the source, from material and fuel mining through construction to operation and waste management.
A carbon footprint (or greenhouse gas footprint) is a calculated value or index that makes it possible to compare the total amount of greenhouse gases that an activity, product, company or country adds to the atmosphere. Carbon footprints are usually reported in tonnes of emissions (CO 2-equivalent) per unit of comparison.
The algorithms of ecological footprint accounts have been used in combination with the emergy methodology (S. Zhao, Z. Li and W. Li 2005), and a sustainability index has been derived from the latter. They have also been combined with a measure of quality of life , for instance through the " Happy Planet Index " (HPI) calculated for 178 nations ...
A Jersey cafe chain has started listing the carbon footprint of its menu items. The scheme, run by the government in partnership with Cafe Ube, has recipes rated on a scale of A to E, with A ...
The best known 'single issue' indicator is the carbon footprint: the total emissions of kg CO 2, or kg CO 2 equivalent (taking methane and some other greenhouse gasses into account as well). The advantage of a single issue indicator is, that its calculation is simple and transparent, without any complex assumptions.
Footprint calculation based on completely allocates the environmental impacts to the final consumers. This is called Consumer-based responsibility. This is called Consumer-based responsibility. An alternative way of allocation is one based on direct impacts, F x j {\displaystyle Fx_{j}} , where the impacts are allocated to the producers.