Table 5.
Macro-regional differences in frequency (ΔDF, events/10y) and average severity (ΔDS, score) of drought events between 1951–1980 and 1981–2016, according to SPEIi-12 and SPI-12. In bold, the values that show opposite tendencies using the SPEI-12 and the SPI-12.
| Region | 1981–2016 minus 1951–1980 |
|||
|---|---|---|---|---|
| SPEI-12 |
SPI-12 |
|||
| ΔDF | ΔDS | ΔDF | ΔDS | |
| ALA | 0.7 | −9.3 | 0.4 | −8.3 |
| WNA | −0.3 | 17.6 | −0.9 | 15.0 |
| CNA | −0.6 | −8.1 | −1.2 | −11.2 |
| ENA | −0.1 | 8.0 | 0.3 | −13.9 |
| CAM | 0.9 | −6.2 | 0.8 | −7.0 |
| AMZ | 1.3 | −10.6 | 1.3 | 2.7 |
| CSA | 0.7 | −25.9 | 1.7 | −24.4 |
| SSA | 0.0 | −0.3 | −0.9 | 6.5 |
| NEU | −0.7 | −4.7 | −1.0 | −16.3 |
| NEE | −1.3 | −4.8 | −1.9 | −13.3 |
| MED | 1.9 | 21.0 | 0.6 | 13.7 |
| WAF | 1.7 | −4.1 | 1.0 | 9.1 |
| EAF | 2.5 | 1.4 | 1.7 | −6.1 |
| EQF | 1.3 | 18.1 | 0.8 | 15.8 |
| SAF | 1.9 | 7.4 | 1.3 | 0.5 |
| NAS | −0.6 | 8.5 | −0.6 | 0.3 |
| CAS | 0.3 | 12.3 | 0.3 | 4.2 |
| TIB | −1.2 | 4.6 | −1.5 | −8.4 |
| EAS | 1.9 | 13.8 | 0.9 | 6.0 |
| SAS | −0.3 | −2.5 | −0.3 | −1.1 |
| SEA | −0.3 | 13.4 | −0.3 | 10.6 |
| NAU | 0.0 | −10.6 | 0.7 | −17.5 |
| SAU | 0.0 | 19.2 | 0.0 | −0.2 |