Conclusion
The main goal of this introduction is to highlight some complex systems that can be found in environment. We showed that the term “complex” yield to different definition of complex system. We decomposed the environment in five main (large) “subsystems” (Water cycle, Atmospheric motion, Oceanic motion, Ecology/Biology and Karstic system) which involve a wide range of scale. Note that these subsystems interact each other.
The variability of different measured variables that characterize the evolution of the system emphasizes the difficulty to understand and to model their behavior.
During this lesson, it has been shown that even if the large system is decomposed in subsystems, the complexity remains strong. For instance, the water cycle subsystem is composed of different processes (evaporation, moisture, precipitation...etc.) which themselves are very complex.
