R409B GWP: global warming potential (AR4, AR5)

R409B has a 100-year global warming potential (GWP) of 1,560 under AR4, 1,473.75 under AR5, and 1,610 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.

R409B: global warming potential by report and horizon, in kg CO₂e per kg
Report	Horizon	GWP	Printed by
AR4	100 years	1,560	UNEP
AR5	100 years	1,473.75	MfE
WMO 2022	20 years	4,702	UNEP
WMO 2022	100 years	1,610	UNEP

R409B is a blend. Shares by mass as MfE states them.

Every open record of R409B this page reads, with the figures it prints.

Publisher	Record	Region	Figures	Factor page
MfE	Refrigerant Use - Refrigerant blends: Zeotropes - 409B - R-22/124/142b (65.0/25.0/10.0)	New Zealand	AR5 100 years: 1,473.75
UNEP	R-409B - R-22/124/142b (65.0/25.0/10.0)	World	AR4 100 years: 1,560 · WMO 2022 20 years: 4,702 · WMO 2022 100 years: 1,610

Source: the open records of the open-climate.ai catalogue, version 1590.