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Numerical Adventures with Geochemical Cycles

Numerical Adventures with Geochemical Cycles

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Manufacturer: Oxford University Press, USA
Author: James C. G. Walker
Binding: Hardcover
Publication Date: 1990-12-27
Publisher: Oxford University Press, USA
Label: Oxford University Press, USA
Number Of Pages: 210
Features:

Editorial Review:
The dynamic, evolving Earth, and the mathematical representation of its geochemical changes are the subject of this timely, helpful handbook. Global warming, changes in the ocean, and the effects of fossil fuel combustion are just a few of the phenomena that make the development of geochemical models critical. But what computational methods will help to accurately carry out this task? This new text teaches the methodology of computational simulation of environmental change. The author presents interesting applications of his methods to describe the response of the ocean and atmosphere to the infusion of pollutants, the effect of evaporation on seawater composition, climate change, and many other aspects of the Earth's evolving ecosystem. He also presents simple approaches for solving non-linear systems, calculating isotope ratios, and dealing with chains of identical reservoirs. With creative programs that can be executed on any personal computer, Walker offers earth scientists the techniques necessary to address the key problems in their field.
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Customer Reviews
Average Customer Rating:

Robust Practical Modeling methods with code.

2005-11-20
The author himself mentions at the end of the book that :

"The applications I presented in this book were chosen to illustrate simple computational methods rather than to constitute serious research simulations of natural systems"

On the contrary to the one star rated review. The reviewer possibly overlooked one aspect of the book. Sure, the Basic code presented may have its problems. What the book does offer, though, is to quantify some very simple and robust techniques for quantifying the relationships such as CO2, and reservoirs (for an example).

He starts of using Eulers solution , gives the algorithm , and the reason and ways that he frames his analytic relationships.

Whats important or useful is that he shows what tests to conduct in order that you set up your system of equations in such a way that youre able to achieve numerical stability with time.

Put it another way - he is mindful that if you set up your equations in the correct way - it doesnt matter how you perturbe the system - the solutions cranked out by the model - tend to converge to the same answers. Numerical stability.

In terms of ideas and applications of ideas this book is a gem. The maths is aimed at practical implementation. Although youll need a reasonable maths back ground - you arent presented with intractible mathematics. This stuff is down to earth, programmable.

To cap , more importantly - the ideas and modelling method presented is robust and practical .

Forget the myopic magnification of microscopic errors.
Focus on the bigger picture.

Worst Book Ever

2005-11-10
Well maybe not. However, neither the mathematical methods used nor the algorithms used to implement them are well developed. These fundamental shortcoming when combined with abundant typos and errors in the included code make this book more of a headache than it is worth. Save yourself the pain and skip this one.

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