Not exact matches
Lower
temp might mean
deep water would have formed and sank at a higher rate, depleting surface salt levels faster than usual.
On my rough calcs, this upwelling of cold
deep water spreading out under the tradewinds will be enough to affect surface
temps at the times of climate regime reversals, and sure enough there is a giveaway dip near the peak of the AMO, and the troughs are spikier than the crests of the AMO curve.
With the Earth known as the «
water planet» because of over 70 % of the globe covered by
deep oceans, warmer
temps directly result in more evaporation of the ocean
water into the air - clouds.
But it actually makes sense: El Ninos raise atmospheric
temps because a
deep pool of warm
water in the western Pacific gets spread out over a larger area, raising sea surface temperatures over a big chunk of the Pacific.