Normal wet and drought return periods of SPI-12 and SPEI-12 indices under climate change conditions
| Year . | T SPI (moderately wet) . | T SPI (moderately drought) . | T SPEI (moderately wet) . | T SPEI (moderately drought) . |
|---|---|---|---|---|
| Base (1989–2018) | 8 | 8 | 10 | 15 |
| RCP 2.6 (2021–2050) | 10 | 15 | 30 | 4 |
| RCP 4.5 (2021–2050) | 15 | 8 | 8 | 4 |
| RCP8.5 (2021–2050) | 15 | 8 | 8 | 5 |
| Year . | T SPI (moderately wet) . | T SPI (moderately drought) . | T SPEI (moderately wet) . | T SPEI (moderately drought) . |
|---|---|---|---|---|
| Base (1989–2018) | 8 | 8 | 10 | 15 |
| RCP 2.6 (2021–2050) | 10 | 15 | 30 | 4 |
| RCP 4.5 (2021–2050) | 15 | 8 | 8 | 4 |
| RCP8.5 (2021–2050) | 15 | 8 | 8 | 5 |