The reason — the warmer - than -
normal waters associated with the two El Nino events were centered in different geographical locations.
Not exact matches
There are a few disadvantages of giving birth in the
water, but on the whole it is regarded as a safe procedure and the risks are very similar to those
associated with
normal birth.
La Niña is
associated with cooler than
normal water temperatures in the Equatorial Pacific Ocean, unlike El Niño which is
associated with warmer than
normal water temperatures.
[1] Upwelling of colder - than -
normal ocean
water,
associated with a La Niña, can strengthen this effect even more.
Recently, there appears to have been more cool
water than
normal associated with the upwelling (cool) Kelvin waves, so we've had the double - dip (2010/11 La Niña and 2011/12 La Niña) and now La Niña conditions — though I don't know that we could classify this as a triple - dip, since we did reach strong El Niño conditions for a short period of time during 2012.