Effective CO<sub>2</sub> lifetime and future CO<sub>2</sub> levels based on fit function
The estimated global CO<sub>2</sub> emission rates and the measured atmospheric CO<sub>2</sub> concentrations show that only a certain share of the emitted CO<sub>2</sub> accumulates in the atmosphere. For given atmospheric emissions of CO<sub>2</sub&g...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2013-09-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/31/1591/2013/angeo-31-1591-2013.pdf |
| Summary: | The estimated global CO<sub>2</sub> emission rates and the measured atmospheric
CO<sub>2</sub> concentrations show that only a certain share of the emitted
CO<sub>2</sub> accumulates in the atmosphere. For given atmospheric emissions of
CO<sub>2</sub>, the effective lifetime determines its accumulation in the
atmosphere and, consequently, its impact on the future global
warming. We found that on average the inferred effective lifetime
of CO<sub>2</sub> decreases as its atmospheric concentration increases, reducing
the rate of its accumulation in the atmosphere. We derived a power function
that fits the varying lifetimes. Based on this fitting function, we
calculated the increase of CO<sub>2</sub> for different scenarios of future global
emission rates. |
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| ISSN: | 0992-7689 1432-0576 |