Table 2 Statistics of post-monsoon season (OND) Bay of Bengal cyclones during contrasting phases of ENSO and IOD during 1979–2020.
From: ENSO influence on Bay of Bengal cyclogenesis confined to low latitudes
Year | Total BoB TC (per year) | LLC (per year) | HLC (per year) |
|---|---|---|---|
All Years | 1.83 (77TC/42yrs) | 0.79 (33TC/42yrs) | 1.05 (44TC/42yrs) |
El Niño | 1.33 (16TC/12yrs) ↓27% | 0.33 (04TC/12yrs) ↓58% | 1.00 (12TC/12yrs) ↓5% |
La Niña | 2.18 (24TC/11yrs) ↑19% | 1.09 (12TC/11yrs) ↑38%. | 1.09 (12TC/11yrs) ↑4% |
Neutral ENSO | 1.95 (37TC/19yrs) ↑6%. | 0.89 (17TC/19yrs) ↑13% | 1.05 (20TC/19yrs) ↑0% |
PIOD | 1.45 (16TC/11yrs) ↓21% | 0.45 (05TC/11yrs) ↓42% | 1.00 (11TC/11yrs) ↓5% |
NIOD | 2.55 (23TC/09yrs) ↑40% | 1.11 (10TC/09yrs) ↑41% | 1.44 (13TC/09yrs) ↑38% |
Neutral IOD | 1.72 (38TC/22yrs) ↓6% | 0.82 (18TC/22yrs) ↑4% | 0.91 (20TC/22yrs) ↓13% |
Normal Years | 1.73 (19TC/11yrs) ↓6% | 0.82 (09TC/11yrs) ↑4% | 0.91 (10TC/11yrs) ↓13% |
