R420A GWP: global warming potential (AR4, AR5)
R420A has a 100-year global warming potential (GWP) of 1,536 under AR4, 1,144 under AR5, and 1,556 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.
Composition
R420A is a blend. Shares by mass as UNEP states them.
| Component | Share by mass |
|---|---|
| R134a | 88% |
| R142b | 12% |
Source: the open records of the open-climate.ai catalogue, version 1590.
Every gas and refrigerant