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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 ...
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.
As of 2021 the remaining carbon budget for a 50-50 chance of staying below 1.5 degrees of warming is 460 bn tonnes of CO 2 or 11 + 1 ⁄ 2 years at 2020 emission rates. [11] Global average greenhouse gas per person per year in the late 2010s was about 7 tonnes [12] – including 0.7 tonnes CO 2 eq food, 1.1 tonnes from the home, and 0.8 tonnes from transport. [13]
The biogeochemical cycle by which carbon is exchanged between the biosphere, geosphere, hydrosphere, and atmosphere of the Earth. carbon diet The act of reducing the output of CO 2 to reduce impact on the environment. carbon dioxide carbon footprint The total set of greenhouse gas emissions caused by an organization, event or product. carbon offset
A foodprint refers to the environmental pressures created by the food demands of individuals, organizations, and geopolitical entities. [1] Like other forms of ecological footprinting, a foodprint can include multiple parameters to quantify the overall environmental impact of food, including carbon footprinting, water footprinting, and foodshed ...
Some authors say that carbon neutrality strategies focus only on carbon dioxide, but net zero includes all greenhouse gases. [28] [29] However some publications, such as the national strategy of France, use the term "carbon neutral" to mean net reductions of all greenhouse gases. [3] The United States has pledged to achieve "net zero" emissions ...
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 book is written by British writer and academic Mike Berners-Lee, who acknowledges throughout the book his use of estimates and imperfect calculations. [1] [2] It was first published in 2010; a second edition was published in the UK in 2020, and an "Updated North American edition", retitled The Carbon Footprint of Everything, in 2022.