The "Types and Characteristics of Greenhouse Gases" published by the National Institute for Environmental Studies is as follows:
| Types of greenhouse gases | Greenhouse effect ratio | Duration to remain in the atmosphere Carbon dioxide |
|---|---|---|
| Carbon dioxide | １ | 1000 years |
| Methane | 25 | 10 years |
| Nitrous oxide | 298 | 100 years |
| Freon | 1430 | 14 years |
As shown in this table, carbon dioxide remains in the atmosphere for as long as 1,000 years, so even if we stopped emitting it immediately, global warming would not stop.
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"Types and Characteristics of Greenhouse Gases"
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