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19

UNIT 2

Weather Causes (1)
SECTION 1. ATMOSPHERE

1. General
This study of weather causes is not a complete course in meteorology. It is a review of basic
meteorology, and provides you with sufficient knowledge to effectively use weather
information. It covers atmospheric properties, the structure of the atmosphere, atmospheric
processes, and weather-producing systems.

2. Layers
The atmosphere is divided into five layers with each layer having certain features. For our
purpose we will talk about the troposphere and the stratosphere, since most aircraft flights
occur in those layers.

Vertical structure of the atmosphere showing one division into layers or spheres based on
temperature.
Figure 1