An ISO 14067 index for comparing global mean temperature response at a chosen time point.
Global temperature change potential compares the global mean surface temperature response of a greenhouse-gas emission pulse with the response from carbon dioxide. It is not the same indicator as GWP, which focuses on radiative forcing over a time horizon.
This page follows ISO 14067:2018. GTP is a climate metric used in specific methodological contexts and should not be substituted for GWP unless the study method permits it.
ISO 14067:2018 - Greenhouse gases — Carbon footprint of products
index measuring the change in global mean surface temperature at a chosen point in time in response to a GHG (3.1.2.1) emission pulse, relative to the change in temperature attributed to carbon dioxide (CO2)
Reference: 3.1.2.3
This term originates in ISO 14067:2018 and/or ISO 14044 LCA methodology. It is used in EU product regulation — particularly under the EU Battery Regulation (PEF method for carbon footprint) and ESPR (environmental footprint) — because both regulations require lifecycle-based quantification of environmental impacts. Practitioners applying these regulations should be familiar with these LCA/PEF concepts to correctly scope, conduct, and verify product-level environmental assessments.
Implementation records should capture the GTP value, chosen time point, gas identifier, temperature-response basis, source table, method requirement, calculation context, and relationship to any CO2e-style result.
Global temperature change potential is a climate-metric interpretation control: the evidence consequence is that temperature-response comparisons can be documented separately from GWP-based CO2e calculations.