Research Article
Recent Changes of Some Observed Climate Extreme Events in Kano
Table 4
Summary of the daily temperature indices between the base (1961–1990) and recent (1991–2007) period.
| Indices | Period | Difference | Unit | 1960–1990 | 1991–2007 |
| Cool nights | 1.86 | 2.42 | 0.55 | % | Warm nights | 1.79 | 2.42 | 0.62 | % | Cool days | 1.85 | 2.43 | 0.58 | % | Warm days | 1.57 | 2.37 | 0.80 | % | Warm spell | 0.81 | 5.14 | 4.33 | % |
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