Topographic (panels a–c) and pressure anomaly (panels d–f) maps for three different topographic configurations. (a) and (d): α_lat = 15° and α_lon = 30° (H-15-030). (b) and (e): α_lat = 75° and α_lon = 210° (H-75-210).(c) and (f): α_lat = 90° and α_lon = 0° (H-90-000). The black lines display the topographic contours in all panels, while the thick dotted black line indicates the longitude of the subsolar point. Letter A–E indicate the locations of the principal provinces of Venus, as defined in the caption of Fig. 1.