In the newly created role, Barton will manage the JCDecaux Airport inventory, liaising closely with the sales team to provide "increased flexibility for clients".
He will report to former Clear Channel group managing director Julie France, who was appointed managing director of JCDecaux Airport in March.
Barton spent six years at Clear Channel, after joining as sales manager in 2001. He had previously worked at IPM and at the Alban Group.
Last month, JCDecaux Airport, which in April unveiled its plans for Heathrow's Terminal 5, announced the appointment of Alan Sullivan as UK sales director.
He is heading the team that is responsible for 13 UK air and rail concessions, including the EUR730m (£493m) 10-year BAA contract.