Table 6 Drought occurrences (%) in GWB at corresponding drought categories and time steps
From: Spatial and temporal appraisal of drought jeopardy over the Gangetic West Bengal, eastern India
Draught Severity Class | SPI values | 3-M. Lag | 12-M Lag | 24-M Lag | 48-M Lag |
|---|---|---|---|---|---|
Moderately dry (D1) | (−1.0 to − 1.49) | 8.76 | 10.80 | 7.83 | 13.08 |
Severely dry (D2) | (−1.5 to − 1.99) | 4.09 | 4.20 | 5.66 | 3.91 |
Extremely Dry (D3) | (−2 and less) | 3.11 | 1.24 | 2.66 | 1.10 |
Total (%) of all categories drought | 15.96 | 16.24 | 16.15 | 18.10 | |