Abstract. Stable isotopes in precipitation can effectively reveal the process of atmospheric water circulation, serving as an effective tool for hydrological and water resource research, climate change, and ecosystem studies. The scarcity of stable isotope data in precipitation has hindered comprehension of the regional hydrology, climate, and ecology due to discontinuities on a temporal scale and unevenness on a spatial scale. To this end, we collated stable hydrogen and oxygen isotope data in precipitation from 842 stations in Eurasia from 1961 to 2022, totalling 51 752 data records. Stable isotopes in precipitation across various regions of Eurasia, as a whole, decrease with increasing latitude and distance from the coast. In the summer, stable isotopes in precipitation are relatively enriched, while in the winter, they are relatively depleted. In recent decades, the stable isotope values of Eurasian precipitation show an overall trend of increasing variation with the advancement of years, which is associated with global warming. Geographical location, underlying surface conditions, seasons, and atmospheric circulation are all factors that determine the characteristics of stable isotopes in precipitation. The dataset of stable isotopes in Eurasian precipitation provides a powerful tool for understanding changes in regional atmospheric water circulation and assists in conducting hydrological, meteorological, and ecological studies in related regions. The datasets are available at https://doi.org/10.17632/rbn35yrbd2.2 (Zhu, 2024).

中文翻译：

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欧亚大陆降水稳定同位素数据集

摘要。降水中的稳定同位素可以有效揭示大气水循环过程，是水文水资源研究、气候变化、生态系统研究的有效工具。降水稳定同位素数据的缺乏，由于时间尺度上的不连续性和空间尺度上的不均匀性，阻碍了对区域水文、气候和生态的理解。为此，我们整理了1961年至2022年欧亚大陆842个站点降水中氢氧稳定同位素数据，共计51 752条数据记录。整个欧亚大陆各地区降水中的稳定同位素随着纬度的增加和距海岸距离的增加而减少。夏季降水中的稳定同位素相对丰富，而冬季则相对贫乏。近几十年来，欧亚降水的稳定同位素值总体呈现出随年份变化增大的趋势，这与全球变暖有关。地理位置、下垫面条件、季节和大气环流都是决定降水中稳定同位素特征的因素。欧亚降水稳定同位素数据集为了解区域大气水循环变化提供了有力工具，有助于开展相关区域的水文、气象和生态研究。数据集可在 https://doi.org/10.17632/rbn35yrbd2.2 上获取（Zhu，2024）。