| Summary: | This dataset contains high resolution hydrogen (δD) and oxygen (δ18O) isotope ratio measurements from the top 15 meters of the Owen Ice Core collected at Summit, Greenland. The δD and δ18O data cover the period from 1978 through summer 2010. In this study, we use these isotopic measurements to explore an important but underutilized relationship between δD and δ18O – the slope of the correlation line of δD vs δ18O (or δD-δ18O line). The primary objectives of this study are 1) to determine the slopes of δD-δ18O lines over interannual timescales, 2) to examine mechanisms controlling these slopes (in this case, the hypothesized effect of sublimation-sourced moisture and the seasonality of precipitation), and 3) to explore implications for isotopic interpretation of deep ice cores.
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