Publication Date:
2023-01-13
Description:
Stable isotopes of hydrogen and oxygen (δ2H, δ18O and δ17O) serve as powerful tracers in hydrological investigations. To our knowledge, daily precipitation isotope record especially 17O-excess is rare in the mid-latitudes. To fill such knowledge gap, daily precipitation samples (n = 446) were collected from June 2014 to May 2018 in Indianapolis, Indiana, U.S. A Triple Water Vapor Isotope Analyzer (T-WVIA) based on Off-Axis Integrated Cavity Output Spectroscopy (OA-ICOS) technique was used to concurrently measure precipitation isotopic variations (δ2H, δ18O and δ17O). Meanwhile, 17O-excess and d-excess as second-order isotopic variables were calculated to provide additional information on precipitation formation and transport mechanisms. This study presents a four-year daily precipitation isotope dataset for mid-latitudes, and makes it available to researchers around the world who may use it as a reference for site comparisons and for global hydrological modeling validation.
Keywords:
Calculated; DATE/TIME; Deuterium excess; Indianapolis_precip_2014-2018; Oxygen-17 excess; Precipitation; Triple water vapor Isotope analyzer (T-WVIA) based on off-axis integrated cavity output spectroscopy (OA-ICOS); Water sample, precipitation; WSP; δ17O; δ18O, water; δ Deuterium, water
Type:
Dataset
Format:
text/tab-separated-values, 2676 data points
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