No robust evidence of future changes in major stratospheric sudden warmings: a multi-model assessment from CCMI. - Ayarzagüena, Blanca; Polvani, Lorenzo M.; Langematz, Ulrike; Akiyoshi, Hideharu; Bekki, Slimane; Butchart, Neal; Dameris, Martin; Deushi, Makoto; Hardiman, Steven C.; Jöckel, Patrick; Klekociuk, Andrew; Marchand, Marion; et al. (Atmospheric Chemistry & Physics, 2018)