Geneva, 8 January 2013 – The recent posting of drafts of the Working Group II contribution to the Intergovernmental Panel on Climate Change (IPCC) Fifth Assessment Report (AR5) starts from the incorrect assumption that the IPCC is interested in restricting reviewer input to its drafts. In fact, the opposite is true. The quality of IPCC reports and the integrity of the IPCC process depend on thoughtful comments from the widest possible range of experts, representing the full spectrum of scientific views. The Working Group II review process is open to anyone interested in submitting comments. All scientific comments submitted through the review process will be considered and addressed by authors, and all comments are made public when the report is completed. Comments in blogs or other communications will not contribute to the review process. The recent posting of drafts should not distract potential reviewers from the important opportunity to play a role in developing a balanced report of the highest quality.