I want to acknowledge all of the people that helped review or edit the model documentation: David Lawrence, Samuel Levis, Keith Oleson, and Sean Swenson. Thank you for your help in catching errors, and making the document more understandable and readable. Our readers thank you as well, as now it is much easier for them to digest. Any mistakes, or errors are all mine. If you run across one of those errors, please let us know, by following the Section called Reporting bugs in CLM4 in Other resources to get help from. I also want to thank Sheri Mickelson, for her work in doing perturbation analysis on bluefire and intrepid, and allowing us to use that data in this document.