The CH-IRP data set: fortnightly data of δ2H and δ18O in streamflow and precipitation in Switzerland

The data set contains δ²H and δ¹⁸O from fortnightly grab samples in streamflow and corresponding monthly precipitation derived from interpolation for 23 Swiss hydrological catchments. δ²H and δ¹⁸O in streamflow are provided as one ASCII file for each station. Additionally to these time series each of the files contains the Deuterium excess, the streamflow conditions preceding the sampling as well as the z-scores indicating if a sample might be a statistical outlier, assuming the data are normally distributed. All files contain further information for each sample whether double measurement was performed in the lab comments indicating for instance special sampling conditions or storage-related issues that could alter the isotopic composition due to fractionation. For each data file for streamflow data there is a corresponding ASCII file for catchment precipitation. These contain the interpolated δ²H and δ¹⁸O in precipitation for the catchment as well as the source data that were used to derive the interpolated values. Associated data that can be useful for applications are provided. This is mean areal precipitation and temperature (ASCII files) as well as the topographic catchment boundaries (shape files).