Latest update from GP over at Netweather
It's interesting to note that the upward trend in AAM happend before the current MJO wave began to develop, possibly the two facets of the atmosphere-ocean dynamical process responding to the same lead ? We have had three strong +MT events now, all driving the GWO into a high angular momentum base state.
Not sure we can confidently count on AAM crashing anytime soon. October's GLAAM value should be unprecedented in the 53 yr time series in terms of going from a negative value in September through to a positive value in October.
Our closest analogue in this respect is 1995 with a disconnect between ENSO and the atmospheric circulation, which may well last until December. The QBO is also interesting. Lastest daily values actually have it weakening at 30 hPa (less easterly), with the lower stratospheric levels still showing a westerly wind.
All of which means that ENSO forecasts for the winter mean squat right now
http://forum.netweather.tv/topic/58354-in-depth-technical-model-discussion/page__view__findpost__p__2142275
Originally Posted by: Gavin D