Extended Data Fig. 3: Spatial maps of return period of the observed 1934 and 1936 HWF.
From: Present-day greenhouse gases could cause more frequent and longer Dust Bowl heatwaves
Return period of summer HWF for (a–c) 1934 and (d–f) 1936, for a, d, WAH21930s, b, e, WAH2PD, and c, f, WAH22015.
