气候变化领域集成服务门户(CCPortal): Isotopic evidence in modern precipitation for the westerly meridional movement in Central Asia

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DOI	10.1016/j.atmosres.2021.105698
	Isotopic evidence in modern precipitation for the westerly meridional movement in Central Asia
	Shi Y.; Wang S.; Wang L.; Zhang M.; Argiriou A.A.; Song Y.; Lei S.
发表日期	2021
ISSN	0169-8095
卷号	259
英文摘要	The seasonal and inter-annual variations of stable isotopes in alpine precipitation in arid Central Asia is of great help to understand the modern hydrological processes and climate proxy in the westerly-dominant region. In this study, we measured the 3-year precipitation isotope values at a site located on the southern Tianshan Mountains in Central Asia. The δ18O values of precipitation show a statistically significant relationship with air temperature (R2 = 0.58). The trajectory diagnostics indicate the strong influence of westerly moisture, although the local trajectories do exist. According to the 3-year isotope records in the sampling site, the δ18O values of precipitation correlated with the meridional circulation index, while the correlation with the zonal circulation index is generally weak. An isotope-enabled GCM is used to analyze the correlation between the δ18O values in summer precipitation and the meridional and zonal wind speeds on a longer time scale; there is a strong correlation between the δ18O values and the meridional wind speed for the upwind direction. The findings indicate the meridional movement of mid-latitude westerly can be sensitively recorded in the modern precipitation in arid Central Asia, and the inter-annual variability of precipitation isotopes in Central Asia can not only be attributed to temperature effect. © 2021 Elsevier B.V.
英文关键词	Central Asia; Moisture source; Precipitation; Temperature effect; δ18O
来源期刊	Atmospheric Research
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/236700
作者单位	College of Geography and Environmental Science, Northwest Normal University, Lanzhou, 730070, China; Key Laboratory of Resource Environment and Sustainable Development of Oasis, Gansu Province, Lanzhou, 730070, China; Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China; Laboratory of Atmospheric Physics, Department of Physics, University of Patras, Patras, GR-26500, Greece
推荐引用方式 GB/T 7714	Shi Y.,Wang S.,Wang L.,et al. Isotopic evidence in modern precipitation for the westerly meridional movement in Central Asia[J]. 中国科学院西北生态环境资源研究院,2021,259.
APA	Shi Y..,Wang S..,Wang L..,Zhang M..,Argiriou A.A..,...&Lei S..(2021).Isotopic evidence in modern precipitation for the westerly meridional movement in Central Asia.Atmospheric Research,259.
MLA	Shi Y.,et al."Isotopic evidence in modern precipitation for the westerly meridional movement in Central Asia".Atmospheric Research 259(2021).