Predictable Component Analysis as performed in the article Bombardi RJ, Trenary L, Pegion KV, Cash B, DelSole T, Kinter JL (2018) Seasonal predictability of summer rainfall over South America. J. Clim., 31 (20), 8181–8195. DOI: 10.1175/JCLI-D-18-0191.1 https://journals.ametsoc.org/doi/full/10.1175/JCLI-D-18-0191.1
