R21 GWP: global warming potential (AR4, AR6)
R21 (HCFC-21) has a 100-year global warming potential (GWP) of 151 under AR4, 160 under AR6, and 161 under WMO 2022.
A GWP is counted in kilograms of CO₂ equivalent (kg CO₂e) per kilogram of gas released.
GWP by IPCC report and horizon
One row per figure. When publishers print different figures under one report, each figure gets its own row.
Who publishes it
Every open record of R21 this page reads, with the figures it prints.
| Publisher | Record | Region | Figures | Factor page |
|---|---|---|---|---|
| ADEME | HCFC-21 | World | AR6 100 years: 160 | |
| ADEME | R21 | World | AR6 100 years: 160 | |
| MfE | Refrigerant Use - Substances controlled by the Montreal Protocol - HCFC-21 - CHCl₂F | New Zealand | AR6 100 years: 160 | |
| UNEP | HCFC-21 - dichlorofluoromethane | World | AR4 100 years: 151 · WMO 2022 20 years: 578 · WMO 2022 100 years: 161 |
Source: the open records of the open-climate.ai catalogue, version 1590.
Every gas and refrigerant