Geography
Why the Intertropical Convergence Zone Migrates and Triggers Tropical Wet/Dry Seasons
Quick fact
The ITCZ is often called the 'doldrums' because sailors used to get stuck there due to calm winds and unpredictable storms.
Why this is interesting
Have you ever wondered why many tropical places have a 'rainy season' and a 'dry season' instead of four seasons like Europe or North America? The answer lies in a giant belt of clouds that moves like a pendulum across the equator.