全球变暖潜能值计算器
使用全球变暖潜能值计算器将不同温室气体转换为CO₂当量。输入甲烷、氧化亚氮等气体排放量，按GWP系数计算等效CO₂排放，统一比较各种温室气体的影响。
CO2-Equivalent
2,800.0 kg CO2e
CO2-Equivalent vs Mass of Gas Emitted
公式
Understanding Global Warming Potential
Global Warming Potential (GWP) compares the heat-trapping ability of a greenhouse gas to CO2 over a specified period, typically 100 years.
Formula
CO2-Equivalent (kg) = Mass of Gas (kg) x GWP Factor
Common GWP-100 values: Methane (CH4) = 28, Nitrous Oxide (N2O) = 265, SF6 = 23,500. A higher GWP means the gas traps more heat per kilogram than CO2.
计算示例
A farm releases 100 kg of methane (GWP = 28) over a year.
- 01CO2-equivalent = 100 kg x 28 = 2,800 kg CO2e
- 02In tonnes: 2,800 / 1,000 = 2.8 tonnes CO2e
常见问题
What does GWP-100 mean?
GWP-100 measures the total warming effect of a gas over 100 years relative to CO2. It is the most commonly used time horizon in climate policy.
Why is methane GWP so much higher than CO2?
Methane absorbs infrared radiation about 80 times more effectively than CO2 over 20 years, but it breaks down faster, so the 100-year GWP is 28.
Where do GWP values come from?
The Intergovernmental Panel on Climate Change (IPCC) publishes GWP values in its assessment reports. The latest values come from the AR6 report.