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 th...

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Autores principales:	Chao Tian, Lixin Wang, Kudzai Farai Kaseke, Broxton W. Bird
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a07772f1f4ea4b2cab94b4b15509252f
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spelling	oai:doaj.org-article:a07772f1f4ea4b2cab94b4b15509252f2021-12-02T11:40:26ZStable isotope compositions (δ2H, δ18O and δ17O) of rainfall and snowfall in the central United States10.1038/s41598-018-25102-72045-2322https://doaj.org/article/a07772f1f4ea4b2cab94b4b15509252f2018-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-25102-7https://doaj.org/toc/2045-2322Abstract 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 moisture source in the spring and summer and for rainfall, while snowfall, as well as precipitation in the fall and winter, were mainly affected by equilibrium fractionation. The 17O-excess of both rainfall and snowfall were not affected by local meteorological factors over the whole study period. At the seasonal scale, it was the case only for the spring. Therefore, 17O-excess of rainfall, snowfall and the spring precipitation could be considered as tracers of evaporative conditions at the moisture source. This study provides a unique precipitation isotope dataset for mid-latitudes and provides a more mechanistic understanding of precipitation formation mechanisms in this region.Chao TianLixin WangKudzai Farai KasekeBroxton W. BirdNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-15 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Chao Tian Lixin Wang Kudzai Farai Kaseke Broxton W. Bird Stable isotope compositions (δ2H, δ18O and δ17O) of rainfall and snowfall in the central United States
description	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 moisture source in the spring and summer and for rainfall, while snowfall, as well as precipitation in the fall and winter, were mainly affected by equilibrium fractionation. The 17O-excess of both rainfall and snowfall were not affected by local meteorological factors over the whole study period. At the seasonal scale, it was the case only for the spring. Therefore, 17O-excess of rainfall, snowfall and the spring precipitation could be considered as tracers of evaporative conditions at the moisture source. This study provides a unique precipitation isotope dataset for mid-latitudes and provides a more mechanistic understanding of precipitation formation mechanisms in this region.
format	article
author	Chao Tian Lixin Wang Kudzai Farai Kaseke Broxton W. Bird
author_facet	Chao Tian Lixin Wang Kudzai Farai Kaseke Broxton W. Bird
author_sort	Chao Tian
title	Stable isotope compositions (δ2H, δ18O and δ17O) of rainfall and snowfall in the central United States
title_short	Stable isotope compositions (δ2H, δ18O and δ17O) of rainfall and snowfall in the central United States
title_full	Stable isotope compositions (δ2H, δ18O and δ17O) of rainfall and snowfall in the central United States
title_fullStr	Stable isotope compositions (δ2H, δ18O and δ17O) of rainfall and snowfall in the central United States
title_full_unstemmed	Stable isotope compositions (δ2H, δ18O and δ17O) of rainfall and snowfall in the central United States
title_sort	stable isotope compositions (δ2h, δ18o and δ17o) of rainfall and snowfall in the central united states
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/a07772f1f4ea4b2cab94b4b15509252f
work_keys_str_mv	AT chaotian stableisotopecompositionsd2hd18oandd17oofrainfallandsnowfallinthecentralunitedstates AT lixinwang stableisotopecompositionsd2hd18oandd17oofrainfallandsnowfallinthecentralunitedstates AT kudzaifaraikaseke stableisotopecompositionsd2hd18oandd17oofrainfallandsnowfallinthecentralunitedstates AT broxtonwbird stableisotopecompositionsd2hd18oandd17oofrainfallandsnowfallinthecentralunitedstates
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Stable isotope compositions (δ2H, δ18O and δ17O) of rainfall and snowfall in the central United States

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