An ice-core record over the last two centuries from Penny Ice Cap, Baffin Island, Canada

in order to reconstruct climatic and environmental changes in the Canadian Arctic, an 85 in deep ice core drilled in 1995 on Penny Ice Cap, Baffin Island, was analyzed for ions and delta(18)O. In addition to the core, snow-pit samples collected in 1994 and 1995 were also analyzed. Elution of ions caused by Summer inching was observed in the pits. Due to the heavy summer melting on this ice cap, seasonal variations of ion chemistry and delta(18)O were not always present in the core. Comparisons of this core with a previously reported core drilled 2.5 in away show that the noise contained in single annual time series is 40-50% for ions and 25% for delta(18)O. The ice-core data, however, provide LIS with a reasonable proxy record of climatic and environmental changes during the last two Centuries Oil better than a decadal basis. Sulfate and nitrate concentrations started to increase around 1900 and 1960, respectively, due to anthropogcnic influx transported from the industrialized regions in North America. Sea-salt concentrations began to increase around the mid-19th century and were elevated throughout the 20th century. This trend of sea-salt concentrations is similar to that of melt percentage, which is a measure Of summer temperature. Warming after the Little Ice Age would have reduced the sea-ice extent and led to the elevated sea-salt concentrations on Penny Ice Cap.