In this section we list the updates that have occurred to CLM4.5 since previous public releases of CESM. The CESM1.2.0 What's New Science and What's New Software pages gives a synopsis of the changes to all CESM components since the CESM1.1.1 release. More details are given in the CLM ChangeLog file.
Previous release pages give similar list of changes for previous versions of the model. The CLM4 in CESM1.0.5 User's Guide gives information on the updates for versions up to CLM4 in CESM1.0.5.