Brewer Dobson Circulation! SSWEs accelerate the upper, polar branch of the BDC, increasing upwelling over the eq. stratosphere & upper troposphere raising the tropopause & favoring more frequent/deeper tropical convection. See: https://t.co/kPgKOYjSRlhttps://t.co/FtCpiHx0ha pic.twitter.com/tmTyQlVsPb

— Eric Webb (@webberweather) December 25, 2018