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the lowest temperature level determine the height of the Tropopause Layer. The tropopause occurs at approximately 20,000 feet over the poles and at approximately 60,000 feet above the equator. Why does the height of the troposphere vary? The height of the top of the troposphere varies with latitude (it isRead More →

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The troposphere is thicker over the equator than the poles because the equator is warmer. Heat differential on the planet’s surface causes convection currents to flow from the equator to the poles. … Thus the simple reason is thermal expansion of the atmosphere at the equator and thermal contraction nearRead More →