Time variation of ENSO events during 1951 to 2007, Positive and negative anomalies represent warm
and cold events, respectively. ENSO index used is Nino3 index.
Time series plots of the Niño 3 (upper) and Niño 3.4
SST indices as 5-month running means using data from NOAA
and relative to a base period climatology from 1950 to 1979.
Values exceeding thresholds of ±0.5°C for Niño 3 and ±0.4°C for
Niño 3.4 are stippled to indicate ENSO events.
Fig.3. Correlation graph of Ku-band attenuations with Nino
SSTs
Correlation coefficient of rainfall anomalies (1971 to 2012) at station culturtuin for