甲烷CO₂当量计算器
使用甲烷CO₂当量计算器将甲烷排放量转换为等效CO₂排放量。输入甲烷排放数据，按GWP系数自动换算，便于统一比较不同温室气体的气候变暖影响。
metric tons CH4
x CO2
CO2 Equivalent
280.0 metric tons CO2e
CO2e at GWP-20 (84x)840.0 metric tons CO2e
CO2e at GWP-100 (28x)280.0 metric tons CO2e
CO2 Equivalent vs Methane Emissions
公式
How to Convert Methane to CO2 Equivalent
Methane (CH4) is more potent than CO2 but breaks down faster in the atmosphere.
Global Warming Potential (GWP)
Formula
CO2e = Methane (tons) * GWP factor
计算示例
A facility emits 10 metric tons of methane per year.
- 01CO2e at GWP-100: 10 * 28 = 280 metric tons CO2e
- 02CO2e at GWP-20: 10 * 84 = 840 metric tons CO2e
常见问题
Why are there different GWP timeframes?
Methane breaks down over about 12 years. GWP-20 captures near-term potency while GWP-100 averages over a century.
Where does methane come from?
Major sources include livestock, landfills, natural gas systems, rice paddies, and wetlands.
Why does methane matter for climate change?
Despite being present in smaller quantities than CO2, methane is responsible for about 30% of current global warming due to its high potency.