2017 continued the tendency of a strongly positive annual-mean East Atlantic (EA) pattern, a "southeastward" shifted NAO-type pattern. 2014-17 spike may be due to Atlantic SST profile (cold blob) or perhaps a remote PDO influence? https://t.co/ahGs9L1m8y pic.twitter.com/0oe5XVW3MQ

— Dr Simon Lee (@SimonLeeWx) January 28, 2018