Earth System Science Data
Earth System Science Data
Earth System Science Data
Articles | Volume 18, issue 2
Articles | Volume 18, issue 2
https://doi.org/10.5194/essd-18-1489-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-18-1489-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 2
Data description article
 | 
26 Feb 2026
Data description article |  | 26 Feb 2026

Seasonal patterns and diagnostic values of δ2H, δ18O, d-excess, and Δ′17O in precipitation over Seoul, South Korea (2016–2020)

Songyi Kim, Yeongcheol Han, Hyejung Jung, and Jeonghoon Lee

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Cited articles

Aggarwal, P. K., Araguás-Araguás, L. J., Groening, M., Kulkarni, K. M., Kurttas, T., Newman, B. D., and Vitvar, T.: Global Hydrological Isotope Data and Data Networks, in: Isoscapes: Understanding movement, pattern, and process on Earth through isotope mapping, edited by: West, J. B., Bowen, G. J., Dawson, T. E., and Tu, K. P., Springer Netherlands, Dordrecht, 33–50, https://doi.org/10.1007/978-90-481-3354-3_2, 2010. 
Angert, A., Cappa, C. D., and DePaolo, D. J.: Kinetic 17O effects in the hydrologic cycle: Indirect evidence and implications, Geochimica et Cosmochimica Acta, 68, 3487–3495, https://doi.org/10.1016/j.gca.2004.02.010, 2004. 
Araguás-Araguás, L., Froehlich, K., and Rozanski, K.: Stable isotope composition of precipitation over southeast Asia, J. Geophys. Res., 103, 28721–28742, https://doi.org/10.1029/98JD02582, 1998. 
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Barkan, E. and Luz, B.: High precision measurements of 17O/16O and 18O/16O ratios in H2O, Rapid Comm. Mass Spectrometry, 19, 3737–3742, https://doi.org/10.1002/rcm.2250, 2005. 
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This study presents a five-year (2016–2020) high-resolution record of precipitation isotopes (δ²H, δ¹⁸O, d-excess, and Δ′¹⁷O) in Seoul, South Korea. All isotopes exhibit strong seasonal cycles controlled by temperature, monsoon rainfall, and moisture source humidity. d-excess reflects source-region evaporation, while Δ′¹⁷O shows reduced seasonal sensitivity and highlights atmospheric mixing and transport processes, providing new constraints on East Asian hydroclimate dynamics. 
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