Geoscientific Model Development Geoscientific Model Development, 2022, 15 (13), pp.5073-5092. ⟨10.5194/gmd-15-5073-2022⟩ Hitchcock, P, Butler, A, Charlton-Perez, A, Garfinkel, C I, Stockdale, T, Anstey, J, Mitchell, D, Domeisen, D I V, Wu, T, Lu, Y, Mastrangelo, D, Malguzzi, P, Lin, H, Muncaster, R, Merryfield, B, Sigmond, M, Xiang, B, Jia, L, Hyun, Y K, Oh, J, Specq, D, Simpson, I R, Richter, J H, Barton, C, Knight, J, Lim, E P & Hendon, H 2022, ' Stratospheric Nudging And Predictable Surface Impacts (SNAPSI) : a protocol for investigating the role of stratospheric polar vortex disturbances in subseasonal to seasonal forecasts ', Geoscientific Model Development, vol. 15, no. 13, pp. 5073-5092 . https://doi.org/10.5194/gmd-15-5073-2022 Geoscientific Model Development, 15 (13) Geoscientific Model Development, vol. 15, no. 13, pp. 5073-5092