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)
1901–20121901–19371938–19741975–20121901–20121901–19371938–19741975–20121901–20121901–19371938–19741975–2012

SPEI20.36.320.133.88.10.57.715.82.802.35.9
SPI18.513.317.823.75.92.56.19.01.501.13.3