The Rising Influence of Rising Affluence

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Could be. Below link shows side by side comparison with August model. I have not seen a rapid change like this in the past. Scrolling down to the second set of figures suggest Sept forecast averages fewer models. If we take only the NASA forecast, things really didn't change much. Also, one is a 3-month moving average and the other is monthly. Is someone at Columbia (not to be confused with CPC/NOAA) trading ngas?

http://iri.columbia.edu/our-expertise/climate/forecasts/enso/current/