A carbon footprint is historically defined as the total set of greenhouse gas emissions caused by an individual, event, organization, or product, expressed as carbon dioxide equivalent.
In most cases, the total carbon footprint cannot be exactly calculated because of inadequate knowledge of and data about the complex interactions between contributing processes, especially which includes the influence on natural processes storing or releasing carbon dioxide.
The carbon footprint is defined as 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).
A carbon Footprint management is the strategy and set of actions to help an organisation meet their carbon reduction objectives. Typically it will include a summary of previous carbon footprint assessments, carefully identified carbon reduction targets and defined actions to achieve the goals set by the organization. With a Carbon Footprint Management Plan, an organization will have clarity of direction and well defined set of projects that will help in meeting commercial goal (cost saving and revenue generating), compliance/supply chain requirements and employee engagement.