Research Article
Sensitivity of CO2 and CH4 Annual Cycles to Different Meteorological Variables at a Rural Site in Northern Spain
Table 4
Recirculation factor calculated in different studies.
| Site | Recirculation factor (average) | Period (years) | Reference |
| Portugal | 0.10–0.39 | 9 | [41] | India | 0.15–0.24 | 5 | [42] | Argentina | 0.16–0.25 | 2 | [43] | India | 0.21–0.27 | 6 | [44] | Korea | 0.23–0.33 | 2 | [45] | Oman | 0.26–0.48 | 5 | [46] | Israel | 0.27–0.53 | 5 | [47] |
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