Research Article
Drought Trends in the Iberian Peninsula over the Last 112 Years
Table 3
Relative frequency (%) in which droughts are affecting more than 40% of the Iberian Peninsula on each month.
| | Moderate (−0.84) | Severe (−1.28) | Extreme (−1.65) | | 1901–2012 | 1901–1937 | 1938–1974 | 1975–2012 | 1901–2012 | 1901–1937 | 1938–1974 | 1975–2012 | 1901–2012 | 1901–1937 | 1938–1974 | 1975–2012 |
| SPEI | 20.3 | 6.3 | 20.1 | 33.8 | 8.1 | 0.5 | 7.7 | 15.8 | 2.8 | 0 | 2.3 | 5.9 | SPI | 18.5 | 13.3 | 17.8 | 23.7 | 5.9 | 2.5 | 6.1 | 9.0 | 1.5 | 0 | 1.1 | 3.3 |
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