This dataset contains measurements of carbon dioxide gas exchange over a site restored from plantation forest to peat in 1997/1998, in the Flow Country, Caithness and Sutherland. It contains eddy-covariance and associated meteorological and pedological measurements from 2015-08-19 11:00 to 2022-12-31 at half-hourly intervals. The carbon dioxide time series has been gap-filled to allow the calculation of annual budgets for carbon exchange. The site reference is UK-THE ( http://www.europe-fluxdata.eu/home/sites-list )