Stable isotope compositions (δ²H, δ¹⁸O and δ¹⁷O) of rainfall and snowfall in the central United States.

ABSTRACT: Stable isotopes of hydrogen and oxygen (δ²H, δ¹⁸O and δ¹⁷O) can be used as natural tracers to improve our understanding of hydrological and meteorological processes. Studies of precipitation isotopes, especially ¹⁷O-excess observations, are extremely limited in the mid-latitudes. To fill this knowledge gap, we measured δ²H, δ¹⁸O and δ¹⁷O of event-based precipitation samples collected from Indianapolis, Indiana, USA over two years and investigated the influence of meteorological factors on precipitation isotope variations. The results showed that the daily temperature played a major role in controlling the isotope variations. Precipitation experienced kinetic fractionation associated with evaporation at the moistur

SUBMITTER: Tian C 

PROVIDER: S-EPMC5928101 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature