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Article

Deuterium Excess in Precipitation Reveals Water Vapor Source in the Monsoon Margin Sites in Northwest China

1
College of Geography and Environmental Science, Northwest Normal University, Lanzhou 730070, China
2
Laboratory of Atmospheric Physics, Physics Department, University of Patras, GR-265 00 Patras, Greece
*
Author to whom correspondence should be addressed.
Water 2020, 12(12), 3315; https://doi.org/10.3390/w12123315
Received: 6 October 2020 / Revised: 16 November 2020 / Accepted: 17 November 2020 / Published: 26 November 2020
The deuterium excess (d) in precipitation, determined by the stable hydrogen and oxygen isotopes (δ2H and δ18O), is a widely applied parameter in tracing the water vapor source. Based on the multiple-year observations of stable water isotopes in precipitation at four stations in the Lanzhou city, Northwest China, we analyzed the variations in deuterium excess in precipitation at the Asian monsoon margin region. The mean value of deuterium excess at the study region is 11.0‰ in the dry season and 8.0‰ in the wet season. The d value in precipitation negatively correlates with air temperature and vapor pressure. The low d value during the wet season reflects the monsoon moisture transported from long distances. During the dry season, the continental air masses correspond to the higher d value in precipitation. The moisture regimes based on reanalysis data are generally consistent with the findings using a stable isotopic approach, and the monsoon moisture is highlighted in summer precipitation at these monsoon margin sites. View Full-Text
Keywords: deuterium excess; water vapor source; precipitation; monsoon margin; Lanzhou deuterium excess; water vapor source; precipitation; monsoon margin; Lanzhou
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MDPI and ACS Style

Chen, F.; Zhang, M.; A. Argiriou, A.; Wang, S.; Zhou, X.; Liu, X. Deuterium Excess in Precipitation Reveals Water Vapor Source in the Monsoon Margin Sites in Northwest China. Water 2020, 12, 3315. https://doi.org/10.3390/w12123315

AMA Style

Chen F, Zhang M, A. Argiriou A, Wang S, Zhou X, Liu X. Deuterium Excess in Precipitation Reveals Water Vapor Source in the Monsoon Margin Sites in Northwest China. Water. 2020; 12(12):3315. https://doi.org/10.3390/w12123315

Chicago/Turabian Style

Chen, Fenli, Mingjun Zhang, Athanassios A. Argiriou, Shengjie Wang, Xin Zhou, and Xueyuan Liu. 2020. "Deuterium Excess in Precipitation Reveals Water Vapor Source in the Monsoon Margin Sites in Northwest China" Water 12, no. 12: 3315. https://doi.org/10.3390/w12123315

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