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| Horizontal resolution (km) | North America | Europe | China | Arctic |
|---|---|---|---|---|
| 3.5 | 1.120 | 1.317 | 1.324 | 1.030 |
| 14 | 1.153 | 1.272 | 1.314 | 1.254 |
| 56 | 1.249 | 1.369 | 1.340 | 6.105 |
Ratio of the surface black carbon aerosol (BCA) concentration from in situ measurements to that simulated by the model averaged over sites in North America, Europe, China, and the Arctic.
