El Nino strong enough to reverse trade winds

El Niño means tropical Pacific is warmer than normal, which improves chances that typhoons will form…typhoons on both sides of the equator are helping to reinforce a big burst of westerly winds along the equator. These westerly wind bursts are a hallmark of El Niño, and help push subsurface warm water toward the coast of South America. If enough warm water butts up against Peru, the normal cold water ocean current there can get shut off, exacerbating the pattern.

Exactly how this all gets kicked off is an area of active research, but it’s clear that big El Niños need deviant trade winds to maintain the feedback loop. During especially strong El Niños, like this year’s promises to be, the trade winds can sometimes reverse direction—and this week’s off-the-charts wind surge is at record-strength for so early in an El Niño event.

>more> ClimateCrocks

PS Typhoon Soudelor hits Taiwan reported rainfall 1.5m in 48 hours – ouch!

About groundswellbasscoast

This is on behalf of local climate change group. Material is selected by Bernie McComb and does not necessarily represent opinion of whole group.
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