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A greenhouse gas footprint (GHG-footprint) is the total greenhouse gas (GHG) emissions caused by an individual, event, organization, service, or product. Greenhouse gases, including the carbon-containing gases carbon dioxide and methane, can be emitted through the burning of fossil fuels, land clearance and the production and consumption of food, manufactured goods, materials, wood, roads, buildings, transportation and other services. The term was popularized by a $250 million ad campaign by the oil and gas company BP in an attempt to move public attention away from restricting the activities of fossil fuel companies and onto individual responsibility for solving climate change.

In most cases, the total carbon footprint cannot be calculated exactly because of inadequate knowledge of and data about the complex interactions between contributing processes, including the influence of natural processes that store or release carbon dioxide. For this reason, Wright, Kemp, and Williams proposed the following definition of a carbon footprint:"A measure of the total amount of carbon dioxide (CO2) and methane (CH4) 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 or activity of interest. Calculated as carbon dioxide equivalent using the relevant 100-year global warming potential (GWP100)."The global average annual carbon footprint per person in 2014 was about 5 tonnes CO2eq.

Outline:

Background

Carbon footprint vs. GHG footprint

Measuring GHG emissions

Reducing GHG emissions

Struggling with GHG footprint specific information - how it's calculated, how to structure this page which is supposed to be in conjunction with the Carbon footprint page, how to differentiate.