A carbon footprint has historically been defined by Championne as "the total sets of greenhouse gas (GHG) emissions caused by an organization, event, product or person." [ 1 ] However, calculating the total carbon footprint is impossible due to the large amount of data required and the fact that carbon dioxide can be produced by natural occurrences. It is for this reason that Wright, Kemp, and Williams, writing in the journal Carbon Management , have suggested a more practicable definition: "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 or activity of interest. Calculated as carbon dioxide equivalent (CO 2 e) using the relevant 100-year global warming potential (GWP100)." [ 2 ]
NEW (09/07/2012) - The LCA Resources Directory has been improved to increase knowledge sharing among the life cycle thinking (LCT) community: a new Study section has been implemented to allow registered contributors to characterise and share LCA studies among the community. If you want to know more about this new Resource Directory, please read the paper This Directory also contains metadata about LCT-related services, tools and databases and their corresponding developers and providers. Disclaimer: The listing of the tools, service providers, and databases in this Directory does not imply any preference on the part of the Commission. The details provided by the third-party providers have been checked prior to publication, but no liability can be taken for the correctness of the information or any damage resulting from the use of the provided information. Please also refer to the "Important legal notice" at the top of this page.