Tian, Chao; Wang, Lixin (2018): Hydrogen and oxygen stable isotope variations of daily precipitation from 2014-2018 in the central United States [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.895300, Supplement to: Tian, C; Wang, L (2019): Stable isotope variations of daily precipitation from 2014–2018 in the central United States. Scientific Data, 6, 190018, https://doi.org/10.1038/sdata.2019.18
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Published: 2018-10-16 • DOI registered: 2019-01-19
Abstract:
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.
Coverage:
Latitude: 39.880000 * Longitude: -86.270000
Date/Time Start: 2014-06-04T00:00:00 * Date/Time End: 2018-05-19T00:00:00
Minimum Elevation: 258.0 m * Maximum Elevation: 258.0 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DATE/TIME | Date/Time | Tian, Chao | Geocode | ||
| 2 | δ Deuterium, water | δD H2O | ‰ SMOW | Tian, Chao | Triple water vapor Isotope analyzer (T-WVIA) based on off-axis integrated cavity output spectroscopy (OA-ICOS) | normalized to the VSMOW-SLAP scale |
| 3 | δ18O, water | δ18O H2O | ‰ SMOW | Tian, Chao | Triple water vapor Isotope analyzer (T-WVIA) based on off-axis integrated cavity output spectroscopy (OA-ICOS) | normalized to the VSMOW-SLAP scale |
| 4 | δ17O | δ17O | ‰ | Tian, Chao | Triple water vapor Isotope analyzer (T-WVIA) based on off-axis integrated cavity output spectroscopy (OA-ICOS) | normalized to the VSMOW-SLAP scale |
| 5 | Deuterium excess | d xs | ‰ | Tian, Chao | Calculated | normalized to the VSMOW-SLAP scale |
| 6 | Oxygen-17 excess | 17O xs | per meg | Tian, Chao | Calculated | normalized to the VSMOW-SLAP scale |
| 7 | Precipitation | Precip | mm | Tian, Chao |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
2676 data points
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