Table 1 Comparison of probabilities of the convective and dynamic instabilities
Location | Tromsø (69.6° N, 19.2° E) | Albuquerquea (35° N, 106.5° W) | Mauib (20.7° N, 156.3° W) | Fort Collinsc (41° N, 105° W) | SJDCd (23.1° S, 45.9° W) |
|---|---|---|---|---|---|
Height range | 80–100 km | 80–105 km | 85–100 km | 80–105 km | 82–98 km |
Season | Winter | All seasons | All seasons | All seasons | All seasonse |
Solar cycle | Full | Middle | High | High | Low |
Data | 339 nights 3725 h | 32 nights 195 h | 19 nights 133 h | 63 nights 390 h | 79 nights 589 h |
Resolutions | (a) 6 min/1 km (b) 15 min/1 km (c) 15 min/2 km (d) 30 min/2 km | 1.5 min/0.5 km | 15 min/1 km | 15 min/2 km | 3 min/0.3 km |
Probability of convective instability | (a) 8.7% (3.6%) (b) 5.2% (3.1%) (c) 1.3% (1.4%) (d) 0.9% (1.1%) | 8.0% | 2.9% | 0.9% (1.4% in winter) | 3.1% |
Data | 210 nights 2059 h | 32 nights 195 h | 19 nights 133 h | 63 nights 390 h | 79 nights 589 h |
Resolutions | Same above | 24 min/1 km | Same above | Same above | 30 min/2 km |
Probability dynamic instability | (a) 10.0% (3.5%) (b) 7.2% (3.1%) (c) 1.4% (1.3%) (d) 0.9% (1.1%) | 7.5% | 10.5% | 4.4% (5.9% in winter) | 17.5% |