This document contains a summary of the information presented in the compilation and synthesis report of the fifth national communications submitted to the secretariat by Parties included in Annex I to the Convention. It provides information on a range of issues relating to the implementation of the Convention, such as national circumstances; greenhouse gas emission trends; emission projections and estimates of the total effect of policies and measures; policies and measures; vulnerability assessment, climate change impacts and adaptation measures; financial resources and transfer of technology; capacity-building; research and systematic observation; and education, training and public awareness