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Climate in Cities
1. Air Pollution
2. Urban Climate
- Radiation
- Heat
- Water
- Bioclimate
* Worksheet 1
* Worksheet 2
* Worksheet 3
* Worksheet 4
3. Acid Rain
climate in cities

Urban Climate

Read more

2. Urban climate - more
Radiation balance

Worksheet 1: Test your knowledge


radiation balance - clipart

1. Clipart by Hemera, Big box of art


Radiation balance


Investigate the surface of your home town.

Walk through one area using a town map for orientation.

How much of the surface is covered with streets, buildings, or concrete?

Are there parks and open spaces and how large are they?

Make a black and white copy of your town map and colour in the parks and the non-built up areas in green and the built up area in red.

Calculate (in percent) how much of your town is built up and how much of the natural surface still exists.


townscape - buildings

2. Town surfaces are mainly covered by buildings, streets and squares.
Picture: Hemera "Big box of art".




Can you answer these questions on radiation balance?

1) Which type of surface reflects the most solar radiation?
a) asphalt
b) snow
c) grass
d) sand

2) The amount of solar radiation is reduced in the city as a result of air pollution and clouds.  By how much?
a) 0 - 10%
b) 10 - 20%
c) 20 - 30%
d) 30 - 40%

3) By what percentage is the direct insolation reduced in a city?
a) up to 10%
b) up to 20%
c) up to 40%
d) up to 50%

4) What is destroyed by ultra-violet radiation?
a) insects
b) birds
c) bacteria
d) pets

5) How much has the back scattering capability of clouds over mid-Europe been reduced (1985-1989 compared to 1996-1999)?
a) 2.8%
b) 0.6%
c) 2.2%
d) 1.4%


Quiz results:

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About this page:
author: - B. Wohlhöfer - University of Nürnberg, Germany
educational reviewing: Dr. Helmut Schrettenbrunner, Dr. Yvonne Schleicher and Julia Heres - University of Nürnberg, Germany
last update: 2003-09-09





last updated 02.03.2006 21:41:22 | © ESPERE-ENC 2003 - 2013