ENSO relationship with Indian rainfall in different months

The rainfall anomalies in All India (AI) and its six subdivisions, North we st (NW), North central (NC), west peninsular (WP), North east (NE), east pe ninsular (EP), and south peninsular (SP), were examined during years of dif ferent categories representing ENSO effects, in the period of 1901-1990. Un ambiguous ENSOW-U had the best association with droughts in NW, NC, WP, in the monsoon months June, July, August and September, but with large month-t o-month variability in some events, indicating the effects of Madden-Julian Oscillations (MJO). In subdivisions NE, EP, SP, effects were mixed, with d roughts in monsoon months preceded and/or followed by, or interspersed with , excess rainfall in some months. In La Ninas (C events), effects were gene rally opposing those of ENSOW-U. Copyright (C) 2000 Royal Meteorological So ciety.