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Open AccessArticle

Modeling Insights into Precipitation Deuterium Excess as an Indicator of Raindrop Evaporation in Lanzhou, China

1
College of Geography and Environmental Science, Northwest Normal University, Lanzhou 730070, China
2
Laboratory of Atmospheric Physics, Department of Physics, University of Patras, GR-265 00 Patras, Greece
*
Author to whom correspondence should be addressed.
Water 2021, 13(2), 193; https://doi.org/10.3390/w13020193
Received: 26 November 2020 / Revised: 31 December 2020 / Accepted: 13 January 2021 / Published: 15 January 2021
(This article belongs to the Section Hydrology and Hydrogeology)
The deuterium excess in precipitation is an effective indicator to assess the existence of sub-cloud evaporation of raindrops. Based on the synchronous measurements of stable isotopes of hydrogen and oxygen (δ2H and δ18O) in precipitation for several sites in Lanzhou, western China, spanning for approximately four years, the variations of deuterium excess between the ground and the cloud base are evaluated by using a one-box Stewart model. The deuterium excess difference below the cloud base during summer (−17.82‰ in Anning, −11.76‰ in Yuzhong, −21.18‰ in Gaolan and −12.41‰ in Yongdeng) is greater than that in other seasons, and difference in winter is weak due to the low temperature. The variations of deuterium excess in precipitation due to below-cloud evaporation are examined for each sampling site and year. The results are useful to understand the modification of raindrop isotope composition below the cloud base at a city scale, and the quantitative methods provide a case study for a semi-arid region at the monsoon margin. View Full-Text
Keywords: raindrop evaporation; deuterium excess; precipitation; Lanzhou raindrop evaporation; deuterium excess; precipitation; Lanzhou
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MDPI and ACS Style

Chen, F.; Zhang, M.; Argiriou, A.A.; Wang, S.; Ma, Q.; Zhou, X.; Wu, X.; Chen, J. Modeling Insights into Precipitation Deuterium Excess as an Indicator of Raindrop Evaporation in Lanzhou, China. Water 2021, 13, 193. https://doi.org/10.3390/w13020193

AMA Style

Chen F, Zhang M, Argiriou AA, Wang S, Ma Q, Zhou X, Wu X, Chen J. Modeling Insights into Precipitation Deuterium Excess as an Indicator of Raindrop Evaporation in Lanzhou, China. Water. 2021; 13(2):193. https://doi.org/10.3390/w13020193

Chicago/Turabian Style

Chen, Fenli; Zhang, Mingjun; Argiriou, Athanassios A.; Wang, Shengjie; Ma, Qian; Zhou, Xin; Wu, Xixi; Chen, Jufan. 2021. "Modeling Insights into Precipitation Deuterium Excess as an Indicator of Raindrop Evaporation in Lanzhou, China" Water 13, no. 2: 193. https://doi.org/10.3390/w13020193

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