Sources of monsoon precipitation and dew assessed in a semiarid area via stable isotopes

Zhang, Wenguang; Jingyi, None Meng; Liu, Bo; Zhang, Shichun; Jiang, Ming; Lv, Xianguo

doi:10.1002/hyp.11155

Cited by 5 publications

(1 citation statement)

References 49 publications

(41 reference statements)

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“…Plum rain and typhoon events result from two different climatic systems, thus exhibiting differences in runoff partitioning, as well as isotope signatures in different runoff components. Currently, transport trajectories and water sources of plum rain and typhoon have been studied in many basins [19,20], while detailed isotopic comparisons and their applications in hydrograph separation remain rare.…”

Section: Introductionmentioning

confidence: 99%

Applicability of Difference in Oxygen-18 and Deuterium of Water Sources and Isotopic Hydrograph Separation in a Bamboo Catchment during Different Rainfall Types

You

Wang

et al. 2021

Water

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Typhoon storm and plum rain are two typical rainfall types in the lower regions of the Yangtze River Basin, which frequently cause flood disasters in China. New information in stable water isotopes offers the opportunity to advance understanding of runoff mechanisms and water source dynamics in response to these two typical rainfall types. We intensively monitored two representative rainfall events in a small bamboo forestry watershed in 2016. Results showed that precipitation isotopic variations during the event were generally larger than those of other monitored compartments (including throughfall, surface overland water, groundwater and river water) and also larger for the plum rain than for the typhoon event (δ18O varied in 5.2‰ and 3.7‰, respectively). Importantly, the differences of isotopic temporal variation between rainfall and throughfall showed significant impacts on the two-component hydrograph separation for both rainfall types (e.g., if not considered, the pre-event water fractions were 26.6% and 15.3% higher for the typhoon and plum rain events, respectively). Furthermore, we evaluated the role of soil water on the three-component isotopic hydrograph separation model; results revealed that soil water accounted for 10.9% and 28.3% of the total discharge in typhoon and plum rain events, respectively. This underpins the important role of soil water dynamics during the rainy season in this humid region.

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Section: Introductionmentioning

confidence: 99%

Applicability of Difference in Oxygen-18 and Deuterium of Water Sources and Isotopic Hydrograph Separation in a Bamboo Catchment during Different Rainfall Types

You

Wang

et al. 2021

Water

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Flux of NH3 release from dew evaporation in downtown and suburban Changchun, China

Jia

Dou

et al. 2023

Environ Sci Pollut Res

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Evolution of Dew and Rain Water Resources in Gujarat (India) between 2005 and 2021

Budhbhatti,

Roy,

Muselli

et al. 2024

Atmosphere

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The present study, carried out in Gujarat (India) between 2005 and 2021, aims to prepare dew and rain maps of Gujarat over a long period (17 years, from 2005 to 2021) in order to evaluate the evolution of the potential for dew and rain in the state. The ratio of dew to precipitation is also determined, which is an important metric that quantifies the contribution of dew to the overall water resources. Global warming leads, in general, to a reduction in precipitation and non-rainfall water contributions such as dew. The study shows, however, a rare increase in the rainfall and dew condensation, with the latter related to an increase in relative humidity and a decrease in wind amplitudes. Rain primarily occurs during the monsoon months, while dew forms during the dry season. Although dew alone cannot resolve water scarcity, it nonetheless may provide an exigent and unignorable contribution to the water balance in time to come. According to the site, the dew–rain ratios, which are also, in general, well correlated with dew yields, can represent between 4.6% (Ahmedabad) and 37.2% (Jamnagar). The positive trend, observed since 2015–2017, is expected to continue into the future.

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Sources of monsoon precipitation and dew assessed in a semiarid area via stable isotopes

Cited by 5 publications

References 49 publications

Applicability of Difference in Oxygen-18 and Deuterium of Water Sources and Isotopic Hydrograph Separation in a Bamboo Catchment during Different Rainfall Types

Applicability of Difference in Oxygen-18 and Deuterium of Water Sources and Isotopic Hydrograph Separation in a Bamboo Catchment during Different Rainfall Types

Flux of NH3 release from dew evaporation in downtown and suburban Changchun, China

Evolution of Dew and Rain Water Resources in Gujarat (India) between 2005 and 2021

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