The open-source Chemistry Land-surface Atmosphere Soil Slab (CLASS) model can be downloaded free of charge from [www.cambridge.org/vila]. The software runs on default installations of Microsoft Windows (XP, 7 and 8) and Mac OS X (10.6–10.10), and can be compiled on Linux distributions supporting Qt (versions 4 and 5). The source code is hosted by GitHub (http://classmodel.github.io/), where incremental updates to the code can be found. Major bug fixes and updates will always be made available through updates on the Cambridge website.

Disclaimer

We make no warranties, express or implied, that the programs supplied with this book are free from error, or are consistent with any particular standard of merchantability, or that they will meet your requirements for any particular application. They should not be relied on to solve a problem whose incorrect solution could result in injury to a person or loss of property. Your use of the programs in such a manner is at your own risk. The authors and publisher disclaim all liability for direct or consequential damages resulting from your use of the programs. All the hands-on exercises have been tested, and any new exercises created by the reader are the sole responsibility of the reader.