The IPCC reference to locations «most warmed by atmospheric circulation changes» is not a description of the «effects of trends» in the AO or other oscillations, which are by definition pretty much trendless. (deepclimate.org)
If there is no cause of El Niño - La Niña, but it is an oscillation of the coupled equatorial Pacific air - ocean system, other oscillations are coupled with this one. (tamino.wordpress.com)