First release of the Supplementary data and routines for the article. Title: Increased projected changes in quasi-resonant amplification and persistent summer weather extremes in the latest multimodel climate projections Authors: Sullyandro O. Guimarães (1,2), Michael E. Mann (3), Stefan Rahmstorf (1,2), Stefan Petri (1), Byron A. Steinman (4), Daniel J. Brouillette (5), Shannon Christiansen (3), Xueke Li (3)(1) Potsdam Institute for Climate Impact Research (PIK), Member of the Leibniz Association, Potsdam, Germany(2) University of Potsdam, Potsdam, Germany(3) Department of Earth & Environmental Science, University of Pennsylvania, Philadelphia PA, USA(4) University of Minnesota Duluth, Duluth, MN, USA(5) Purdue University, West Lafayette, Indiana, USA Article links: https://doi.org/10.1038/s41598-024-72787-0 https://www.nature.com/articles/s41598-024-72787-0