A 4 m long peat core was sampled using a Russian corer from the centre of the bog (52°30'9''N; 4°0'39''W). Chronological constraints were provided by AMS radiocarbon dating of 5 samples along the core, which showed that the core spanned a period from 4460-120 cal yrs BP. Samples of equal volume (2.3 cm3) from 1 cm contiguous intervals along the core were processed using the loss-on-ignition method (Heiri et al. 2001), leaving the ignition residue, which can be a proxy for storminess.