National communications (submitted every four years for Annex I countries, and less regularly for most non-Annex I countries) have also provided broad sets of adaptation-related information. More than three-quarters of submitted INDCs have an adaptation component, but their contents vary greatly in terms of their scope, aims, content, clarity, timeline, link with existing policies including mitigation actions, and “measurability”. The table illustrates the overlap between information requests for NCs and for adaptation communications.