Heatwave definition 1 | Heatwave definition 2 | Heatwave definition 3 | Heatwave definition 4 | |
Definition | ≥ 90th percentile* for ≥2 days† | ≥ 95th percentile* for ≥2 days† | ≥ 98th percentile* for ≥2 days† | ≥ 99th percentile* for ≥2 days† |
Total heatwave days‡ | 305 | 130 | 35 | 7 |
Average (range) temperature of heatwave days (oC) | 27.0 (25.1–30.1) | 27.6 (26.0–30.0) | 28.2 (26.7–29.8) | 28.6 (28.1–28.9) |
Main effect (RR, 95% CI) | 1.19 (1.00 to 1.41) | 1.25 (1.04 to 1.50) | 1.38 (1.09 to 1.75) | 1.48 (1.11 to 1.96) |
Added effect (RR, 95% CI) | 0.99 (0.94 to 1.04) | 1.03 (0.96 to 1.11) | 0.92 (0.81 to 1.04) | 0.79 (0.60 to 1.04) |
*Percentile of the yearly temperature distribution.
†Consecutive days.
‡During the entire study period (1 January 2007 and 31 December 2019).
RR, relative risk.