Extreme wet and drought return periods of SPI-12 and SPEI-12 indices under climate change conditions
| Year . | T SPI (extremely wet) . | T SPI (extremely drought) . | T SPEI (extremely wet) . | T SPEI (extremely drought) . |
|---|---|---|---|---|
| Base (1989–2018) | 15 | 15 | 15 | 8 |
| RCP 2.6 (2021–2050) | 15 | 10 | 10 | 6 |
| RCP 4.5 (2021–2050) | 10 | 10 | 15 | 6 |
| RCP8.5 (2021–2050) | 10 | 10 | 10 | 6 |
| Year . | T SPI (extremely wet) . | T SPI (extremely drought) . | T SPEI (extremely wet) . | T SPEI (extremely drought) . |
|---|---|---|---|---|
| Base (1989–2018) | 15 | 15 | 15 | 8 |
| RCP 2.6 (2021–2050) | 15 | 10 | 10 | 6 |
| RCP 4.5 (2021–2050) | 10 | 10 | 15 | 6 |
| RCP8.5 (2021–2050) | 10 | 10 | 10 | 6 |