"The answer lies in the nature of El Niño and La Niña events. These events are not random, but actually occur in decadal to multi-decadal (20-40 year) clusters, associated with a long-term climate mode known as the Pacific Decadal Oscillation or PDO (sometimes known as the Interdecadal Pacific Oscillation, IPO).
Between 1945 and 1975, we had a predominance of hard-hitting La Niña events, causing the widespread rainfalls referred to by Dr Timbal above. From 1975, the PDO changed state and El Niño became far more frequent with relatively few recharging La Niña events."
Its not just about rain caused by increased temperatures. El Niño and La Niña give you more and less rain. Flannery said back when that we would have less rain. You guys make this up to suite any story that you want to push. Get ready for the next drought or even an ice age or two!
