Overview of experiment design and comparison of models participating in phase 1 of the SPARC Quasi-Biennial Oscillation initiative (QBOi) af Butchart, N, Anstey, J, Hamilton, K, Osprey, S, McLandress, C, Bushell, A, Kawatani, Y, Kim, Y, Lott, F, Scinocca, J, Stockdale, T, Andrews, M, Bellprat, O, Braesicke, P, Cagnazzo, C, Chen, C, Chun, H, Dobrynin, M, Garcia, R, Garcia-Serrano, J, Gray, L, Holt, L, Kerzenmacher, T, Naoe, H, Pohlmann, H, Richter, J, Scaife, A, Schenzinger, V, Serva, F, Versick, S, Watanabe, S, Yoshida, K, Yukimoto, S

Overview of experiment design and comparison of models participating in phase 1 of the SPARC Quasi-Biennial Oscillation initiative (QBOi) af Butchart, N, Anstey, J, Hamilton, K, Osprey, S, McLandress, C, Bushell, A, Kawatani, Y, Kim, Y, Lott, F, Scinocca, J, Stockdale, T, Bellprat, O, Braesicke, P, Cagnazzo, C, Chen, C, Chun, H, Dobrynin, M, Garcia, R, Garcia-Serrano, J, Gray, L, Holt, L, Kerzenmacher, T, Naoe, H, Pohlmann, H, Richter, J, Scaife, A, Schenzinger, V, Serva, F, Versick, S, Watanabe, S, Yoshida, K, Yukimoto, S