Fig. 5: Interpreting the trend in distance at the threshold of 30 mm/3 hours (DIST30).
From: Global expansion of tropical cyclone precipitation footprint

a Change of DIST30 in the tropics (between 25 °S and 25 °N). b Change of vertical wind shear in the tropics. c Changes in observation frequency (number of monthly aggregated records) in the tropics. d Changes of DIST30 in mid-latitudes of the northern hemisphere (> 25 °N). e Changes of vertical wind shear > 25 °N. f The changes of observation frequency > 25 °N.