Earth System Analysis: Integrating Science for by H. J. Schellnhuber (auth.), Professor Dr. Hans-Joachim

By H. J. Schellnhuber (auth.), Professor Dr. Hans-Joachim Schellnhuber, Dr. Volker Wenzel (eds.)

As humanity ways the third millennium, the sustainability of our current lifestyle turns into an increasing number of questionable. New paradigms for the long term coevolution of nature and civilization are urgently wanted with the intention to stay away from insupportable and irreversible variations of our planetary setting. Earth process Analysis is a brand new clinical company that attempts to understand the earth as an entire, a special method that is to be analyzed with tools starting from nonlinear dynamics to macroeconomic modelling. This e-book, because of a global symposium equipped by means of the Potsdam Institute, has 2 goals: first, to combine contributions from best researchers and students from world wide to supply a multifaceted point of view of what Earth process research is all approximately, and moment, to stipulate the scope of the medical problem and complex the final formalism for a well-defined transdisciplinary discourse in this so much interesting issue.

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Since the start of the Industrial Revolution, the atmospheric CO 2 content has increased by more than 25% because of human activities. - In the course of the last Spring seasons in the southern hemisphere, episodes of practically complete disappearance of the stratospheric ozone layer over the Antarctic came about. - The so-called arctic haze, a specific photochemical smog, reigns over a range of up to 9% of the Earth's surface. - Approx. 8% of the global freshwater flow is used for purposes of civilization.

The historical situation discussed above can then be formalized with regard to its global aspects as follows: . N(t) == di(t) . A(t) == di(t) dN dA = Fo(N; t), (1) = Go(N, A). Before we interpret the actual message of this system of equations, we have to first explain the symbols used. t naturally stands for the time variable; a suitable origin t = 0 has to be chosen. N designates the macro-state of the ecosphere N, thus the total natural environment of significance for humanity consisting of atmosphere, hydrosphere, lithosphere and biosphere.

This process is sketched in Fig. 1. --It 1'1 "II , l

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