Recent scientific discussions indicate a special need to consider temporal aspects in LCA of long-lived products.
Elements thereof are already used for several impact categories such as those being related to climate changes.
However, the elements are not used in a systematic and identical way for all categories.
They are a basis for deriving characterisation factors and are based on the implicit assumption of a single discrete emission occurring « now ».
They do not allow for calculating time-dependent loadings arising from multiple, discrete or continuous emissions over a given (future) time horizon, though these predefined time horizons are needed to model both, fate and (abiotic/biotic) effects once the emission has taken place.
A systematic way to introduce temporal aspects is presented.
As a consequence, the need to modify characterisation factors already considering temporal aspects such as residence times is discussed.
Alternatives outside LCIA are also presented.
Mots-clés Pascal : Protection environnement, Prévention pollution, Politique environnement, Réglementation, Evaluation risque, Cycle vie (environnement), Climatologie, Ecotoxicologie
Mots-clés Pascal anglais : Environmental protection, Pollution prevention, Environmental policy, Regulation, Risk assessment, Life cycle (environment), Climatology, Ecotoxicology
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0392556
Code Inist : 001D16E. Création : 25/01/1999.