Earth's atmosphere-part II & tonight's eclipse

Earth's atmosphere-part II & tonight's eclipse - The...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
The Stratosphere, Mesosphere and Thermosphere
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Mesosphere: 50 km – 90 km. Almost all O 3 is depleted above 50 km; UV can not be absorbed and T decreases. Thermosphere: 90 km – 650 km. Heating increases due absorption of UV radiation by O and N atoms. Most of This layer is ionized: the lower thermosphere (90 – 300 km) comprises the ionosphere. The upper thermosphere is known as the exosphere. Troposphere: surface – 20 km. Most gas resides here. Because of condensation water is trapped in this layer. Heated from the surface, convection develops, which contributes to producing Earth’s weather patterns. Stratosphere: 20 km – 50 km. Contains the ozone layer, which protects us from UV radiation. O 3 absorbs IR radiation, contributing to the increase in T with altitude.
Background image of page 2
Very little convection or turbulence in this layer. This is different from the troposphere, where both effects occur. stratosphere
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 9

Earth's atmosphere-part II & tonight's eclipse - The...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online