FIGURE 10.7 Photo Essay: Climates of Southeast Asia The presence of so much wet, tropical air, combined with the movements of the intertropical convergence zone (ITCZ) across the region twice a year, makes Southeast Asia one of the wettest regions in the world. 10.7a Courtesy Frans Lemmens/Photographer’s Choice/Getty Images, 10.7b Courtesy Feargus Cooney/Lonely Planet Images/Getty Images, 10.7c Courtesy Danita Delimont/Gallo Images/Getty Images