Table 2 CH4:CO2, CO:CO2 and N2O:CO2 ratios measured in the different parts of the world during non-summer seasons
Site/region | CH4:CO2 nmol μmol−1 | N2O:CO2 nmol μmol−1 | CO:CO2 nmol μmol−1 | References |
|---|---|---|---|---|
Arctic, European pollution plume | 9.0–15.6 | 13.1–19.3 | [18] | |
Black Forest, European mountain site | 4.8–9.9 | [25] | ||
Ireland, western European pollution plume | 7.2a | 0.28a | [63] | |
Ireland | 41.3 | 0.93 | [64] | |
High Tatras, European mountain site | 9.5–11.7 | [65] | ||
Los Angeles region, California, USA | 7.8 ± 0.8 | 0.5 ± 0.3 | 11 ± 2 | [66] |
Irvine, California, USA | 6.5–10.0 | [67] | ||
Rural site in China, 100 km NW from Beijing | 39–75 | [21] | ||
South Corea, China | 6–39 | [68] | ||
Los Angeles region, California, USA | 5.3–7.3 | [22] | ||
Salt Lake Valley, Utah, USA | 7.2–9.4 | [27] | ||
Alps, Germany, high mountain site | 4.7–7.4 | 3.5–8.0 | [69] | |
Rural site, Yangtze River Delta, China | 5.5–7.5 | [23] | ||
Rural site, Pannonian Basin, Europe | 6.7–13.8 | 0.15–0.31 | 15.0–25.8 | This study |