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

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.

SUBMITTER: Tian C

PROVIDER: S-EPMC6380221 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature

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

Tian Chao C Wang Lixin L

Scientific data 20190219

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 Spectr ...[more]

PMID: 30778258

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Dataset Information

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

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

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