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Whose work first explained why deserts form in bands around the world?

Quick Answer

George Hadley’s circulation theory helped explain subtropical dry zones. Descending air around 30 degrees latitude is a major reason many deserts form there.

The Full Story

George Hadley’s 1735 explanation of trade winds eventually helped scientists understand the pattern of subtropical deserts. As air rises near the equator and sinks in the subtropics, it warms and dries, reducing cloud formation and rainfall. This is why many of the world’s major deserts lie in broad belts around 20 to 35 degrees north and south. His idea remains a cornerstone of climate geography.

Key Facts

1.Hadley’s idea was published in 1735
2.Subtropical deserts often lie near 30° latitude
3.Descending dry air suppresses rain

YouTube Angle

Suggested video title for this topic:

"Why the world’s deserts line up in belts"

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