Spatio-temporal variation mechanisms of hydrogen and oxygen isotopes in precipitation in eurasian continent under climate change

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-09-16 DOI:10.1007/s10967-024-09750-w
Qiaoxue Peng, Tao Zhang, Chengcheng Xia, Qing Xia, Qibing Zhou, Junxi Lin, Teng Tu, Junhao Li, Zhaoyu Zhang, Junbing Pu
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Abstract

Spatio-temporal isotopic variations and the driving forces in precipitation were explored in Eurasian continent. The results showed that δ18O, d-excess and δ2H-δ18O regressions all presented pronounced spatial heterogeneities among different climate zones, with the distance to sea and the latitude identified as main geographic controls. The Mann-Kendall test revealed that significant temperature increases were observed at the majority (18/20) of the sites. However, δ18O did not universally exhibit the same upward trend (5/20 sites) as temperature although significant positive δ18O-temperature correlations existed at most (18/20) sites. The combined effects of multiple environmental factors complicated the interpretation of isotopic signals.

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气候变化下欧亚大陆降水中氢、氧同位素的时空变化机制
研究探讨了欧亚大陆降水的时空同位素变化及其驱动力。结果表明,δ18O、d-excess 和 δ2H-δ18O回归在不同气候带之间都呈现出明显的空间异质性,而距海距离和纬度被认为是主要的地理控制因素。Mann-Kendall 检验表明,在大多数地点(18/20)观察到温度显著上升。然而,δ18O 并未普遍表现出与温度相同的上升趋势(5/20 个地点),尽管在大多数地点(18/20 个)δ18O 与温度存在显著的正相关关系。多种环境因素的综合影响使同位素信号的解释变得更加复杂。
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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