Why Satellite-Imagery?

Satellites everyone knows. From hearsay. But what do these devices actually do, constantly circling the Earth 24 hours a day? In most cases, they are directed towards the earth, in rare cases, they “look” in the other direction, into empty space. Satellites, which are directed to the earth may have many different functions. One important group are the so-called environmental satellites, whose purpose is the monitoring of the atmosphere and the earth’s surface.

At the time of Gauss, you went out into the countryside to produce topographic maps. These  are still an important foundation for today’s surveying. However, even such detail-made maps have the property to become obsolete very quickly. Who has not held a newly bought map in his hands and noted with indignation: “The new ring road is not even on it!”.

Our Earth’s surface is constantly changing. And today even more than before. Man-made movements on the earth’s surface that currently take place, probably have never happened before. It is known that these changes have consequences that could be of explosive significance for mankind (see IPCC 2007). This is just one of several reasons why it is increasingly important to understand what is happening right now with our earth. And here, images from environmental satellites play a central role: permanently new pictures of a changing Earth’s surface.