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Table 1.
Summary of the characteristics of the two AR upflow regions.
| Upflow properties | Eastern upflow region | Western upflow region |
|---|---|---|
| Upflow appears above | 0.6−0.8 MK (Upper transition region) | ∼1 MK (lower corona) |
| DEM peaks at | ∼1.5 MK | ∼1 MK |
| Magnetic field | In a pseudostreamer structure | |
| Unipolar, closed field lines connected the central spine to coronal hole boundaries | Unipolar, open field lines or long transequatorial loop near fan-separatrix | |
| Small-scale dynamics | Faint moss-like bright dots and fibrils, no loop structures at 1 MK | Fan-like loops with a few fibrils and jetlets |
| Structures below | Plage-like, reduced redshifts in Si IV compared to mossy plage | Plage-like, with fibrils and spicules |
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