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Upper Atmosphere
basics
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1. Dynamics & Aviation
2. Ozone
- Stratospheric ozone
- Chlorine chemistry
- CFC & HCFC
- The big misunderstanding
- Cooling
* Worksheet 1
* Worksheet 2
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stratosphere

Upper Atmosphere

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2. Ozone - more

Worksheet 2:
Ozone in the stratosphere: Formation, distribution and absorption

 

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In the stratosphere, ozone is produced and destroyed in the so-called "Chapman-Cycle". The reactions are shown in the box:

 

chapman cycle

 

T 1

Shade the wavelength area in Figure 1a. where ozone can be formed from oxygen.

T 2

Shade the area where ozone is almost the only ultra-violet radiation filter.

 

absorption spectra

Figure 1 
                a) absorption spectra of various gases in the atmosphere
                b) vertical ozone distribution in the atmosphere 
                © 2003 Seesing, Tausch; Universität-Duisburg-Essen, Duisburg;  
                 [Lit.: G.v.Bünau, T. Wolff: Photochemie]

 

T 3

Mark on Figure 1b. where the highest partial pressure of ozone p(O3) is found?  How much higher is p(O3) at this height compared to close to the ground?

 

T 4

What is the approximate thickness of the layer of air where p(O3) is greater than levels close to the ground? Shade this area on Figure 1b.

 

T 5

Explain what you see in Figure 1b. using the information shown in Figure 1a.

 

 

About this page:
authors: M. Seesing, M. Tausch - Universitšt Duisburg-Essen, Duisburg, Germany
last update: 2004-05-13

 

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last updated 02.03.2006 18:43:05 | © ESPERE-ENC 2003 - 2013