Stable isotope variations of daily precipitation from 2014-2018 in the central United States. Academic Article uri icon

abstract

  • Stable isotopes of hydrogen and oxygen (2H, 18O and 17O) 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 (2H, 18O and 17O). 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 assessing global hydrological models.

published proceedings

  • Sci Data

altmetric score

  • 3.5

author list (cited authors)

  • Tian, C., & Wang, L.

citation count

  • 14

complete list of authors

  • Tian, Chao||Wang, Lixin

publication date

  • February 2019