Aviation Weather

full text of the classic FAA guide

Chapter 15

Technically, the Tropics lie between latitudes 23½°N and 23½°S. However, weather typical of this region sometimes extends as much as 45° from the Equator. One may think of the Tropics as uniformly rainy, warm, and humid. The facts are, however, that the Tropics contain both the wettest and driest regions of the world. This chapter describes the circulation basic to the Tropics, terrain influences that determine arid and wet regions, and transitory systems that invade or disturb the basic tropical circulation.

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