Long-term trend of precipitation stable isotopic compositions under global warming conditions

被引：6
|
作者：
Wang, Tao [1 ,2 ]
Chen, Jiansheng [3 ]
机构：
[1] Hohai Univ, Coll Water Conservancy & Hydropower Engn, Nanjing 210098, Peoples R China
[2] Univ Queensland, Sch Civil Engn, St Lucia, Qld 4072, Australia
[3] Hohai Univ, Sch Earth Sci & Engn, Nanjing 211100, Peoples R China
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2020年 / 325卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Precipitation stable isotopes; Temperature and precipitation amount effects; M-K test; Long-term trend; Hydrologic cycle; Global warming; MONSOON PRECIPITATION; ATMOSPHERIC MOISTURE; WATER; DEUTERIUM; O-18; TEMPERATURE; VARIABILITY; DELTA-O-18; OXYGEN;
D O I：
10.1007/s10967-020-07246-x
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Based on observation data from the Global Network of Isotopes in Precipitation, the temporal variations of precipitation oxygen isotope compositions (delta O-18) are estimated globally, by using the methods of non-parametric Mann-Kendall test and Sen's slope estimator. The results show statistically significant long-term delta O-18 increasing and decreasing at about two thirds and one third sites, respectively. For most temperature effect dominated sites, the delta O-18 changes can be attributed to the changes of surface air temperature. Therefore, the delta O-18 is predicted to rise with global warming for these sites, which has great implications in application of isotopes as traces of hydrology.
引用
收藏
页码：557 / 565
页数：9
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