Reconstructed proxy records of late-Holocene High Arctic climate. Panels show unfiltered (a) and filtered (b) varve sedimentation, sensitivity (c), detrended ice core del 18-O for the Camp Century (d) and Devon (e) Ice Caps, melt layer frequency from Agassiz Ice Cap (e), and dated driftwood from the High Arctic (f) for the past 3500 years. Agassiz data was provided by D. Fisher and driftwood data was obtained from Bradley (1990). Devon and Camp Century records were digitized from Paterson et al. (1977).