ORIGIN: https://www.yourweather.co.uk/news/
From the uneven distribution of radiation emerges one of the most important structures in the planet’s climate. A system that fuels rainforests, shapes deserts, and determines when hurricanes can form.
The band of intense clouds crossing the equatorial region (ITCZ) is where the trade winds from both hemispheres converge. Image captured by NASA.What drives the atmosphere? Solar energy. Or, more precisely, its uneven distribution. More energy reaches areas near the equator and less toward the poles. And between both extremes lies the atmosphere’s tendency toward balance. That is how a thermal “machine” emerges to redistribute it: the General Circulation of the Atmosphere.
That “machine” is organized into structures known as cells. Among them, Hadley cells dominate the tropical belt, connecting rainforests with deserts and defining much of the global climate. And it is within this system that the course of hurricane season is also determined.
Atmospheric general circulation is a continuous system simplified into three cells per hemisphere: Hadley (0°–30°) in the tropical region, Ferrel (30°–60°) in the mid-latitudes, and Polar (60°–90°).
Because yes, the season officially
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