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Table 6 Considered geographic locations and climatic data
From: Long permanence high altitude airships: the opportunity of hydrogen
| Â | Lat. | Air temperature | Relative humidity | Daily solar radiation* | Wind speed | Earth temperature |
|---|---|---|---|---|---|---|
deg | °C | % | kWh/m2/d | m/s | °C | |
Bjornoya Island | 74.5 | −1.3 | 88.3 % | 1.81 | 7.0 | 3.0 |
Oslo | 60 | 5.7 | 73.4Â % | 2.41 | 2.6 | 4.5 |
Torino | 45 | 11.6 | 69.5Â % | 3.67 | 1.5 | 7.3 |
Cairo | 30 | 21.4 | 58.1Â % | 5.38 | 4.0 | 24.5 |
Asmara | 15 | 24.6 | 53.3Â % | 5.93 | 4.0 | 27.6 |
Singapore | 0 | 26.7 | 83.3Â % | 4.45 | 1.7 | 26.6 |