Can monsoon moisture arrive in the Qilian Mountains in summer?

Li, Zongxing; Gao, Yan; Wang, Yamin; Pan, Yanhui; Li, Jianguo; Chen, Aifang; Wang, Tingting; Han, Chuntan; Song, Yunpeng; Theakstone, Wilfred H.

doi:10.1016/j.quaint.2014.08.046

Cited by 49 publications

(13 citation statements)

References 45 publications

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“…The source and long-range transport of water vapor on global and regional scales are vital in the studies of water budget and weather processes [e.g., Bosilovich and Schubert, 2002;Gimeno et al, 2013;Good et al, 2015]. Among the methods to identify source-sink relationships of water vapor in the atmosphere, physical water vapor tracers have been widely used in the past decades [e.g., Gat and Carmi, 1970;Salati et al, 1979;Levin et al, 2009;Jouzel et al, 2013;Yao et al, 2013;Good et al, 2014;Li et al, 2015Li et al, , 2016b, with stable isotopes of hydrogen ( 2 H or D) and oxygen ( 18 O) considered as ideal measurable tracers in precipitation and water vapor. Because of the isotopic fractionation that occurs during water phase change in the hydrological cycle, the variations in the stable isotope signatures of vapor and precipitation at synoptic, seasonal, or interannual scales can be modeled to trace moisture sources and describe water vapor transport [Gimeno et al, 2012].…”

Section: Introductionmentioning

confidence: 99%

The effect of moisture source and synoptic conditions on precipitation isotopes in arid central Asia

et al. 2017

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The stable isotope composition of precipitation has been widely applied to trace moisture sources. In the westerly dominated areas of central Asia, the isotopic composition of precipitation significantly correlates with surface air temperature, and the temperature effect is widely accepted. However, the significance of isotopes in tracing water vapor source is not clear for this region, and a further investigation using event‐based observations is still needed. Based on a network around the Tianshan Mountains, the westerly regime of precipitation isotopes is investigated. Although the seasonality of precipitation isotopes for the northern and southern basins of the Tianshan Mountains is similar, the more arid climate and leeward landform of the southern basin lead to weak moisture transport and relatively enriched oxygen isotopes. Of the synoptic systems resulting in heavy precipitation, the central Asian vortex more commonly leads to depleted isotopic ratios in precipitation, which is related to the contribution of northerly moisture and/or surface moisture. The specific humidity‐adjusted Lagrangian diagnostic indicates that the heavy precipitation on the southern basin stations usually has relatively local moisture sources in this arid climate and that terrestrial moisture evaporated from Europe and central Asia, rather than marine moisture from the Atlantic Ocean, is more likely to be the direct moisture source. A sensitivity analysis for target height and adjusting threshold of specific humidity is also applied to the improved Lagrangian diagnostic. Overall, the findings were unaffected by different conditions, and the moisture was more likely to be locally sourced, as indicated by higher specific humidity thresholds.

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Section: Introductionmentioning

confidence: 99%

The effect of moisture source and synoptic conditions on precipitation isotopes in arid central Asia

et al. 2017

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“…In this assumption with different moisture trajectories, the moisture transport is logically more suitable in the Qilian Mountains at the marginal area of Asian monsoon. If only the westerly or monsoon moisture is considered as the dominant upwind, it is not consistent with the meteorological and climate background in this region [74].…”

Section: Discussionmentioning

confidence: 94%

Contribution of Recycled Moisture to Precipitation in Northeastern Tibetan Plateau: A Case Study Based on Bayesian Estimation

et al. 2021

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(1) Background: The degree to which local precipitation is supplied by recycled moisture is a reflection of land surface–atmosphere interactions and a potentially significant climate feedback mechanism. This study tries to figure out the water cycle and precipitation mechanism at a mountainous region and then provides a reference for similar mountainous regions outside China. (2) Methods: The dual-isotopes and Bayes-based program MixSIAR is used to assess contributions of advected, transpirated and evaporated vapor to local precipitation. (3) Results: The average percent contribution of recycled moisture (i.e., the sum of surface evaporated vapor and transpirated vapor) to local precipitation at the Qilian Mountains during 2017 plant growing season is about 37% (the upper quartile and the lower quartile was 30% and 43%, respectively). (4) Conclusions: Although the contribution of advection vapor dominated during the plant growing season, the contribution of recycled moisture is also important in such an alpine region. Furthermore, the commonly used simple linear mixing models often yield contributions greater than 100% or less than 0% and are likely to underestimate the contribution of recycled moisture to local precipitation. Although the alternative Bayesian model is not perfect, either, it is still a big improvement.

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“…As a main water resource for arid mountainous Central Asia, precipitation has an important influence on the hydrological processes of inland river basins, and heavy rainfall events affect streamflow and may produce large peak flows, especially in summer (Mirus and Loague 2013, Sun et al 2016a, 2016b. However, researchers have paid more attention to evaluating the proportion of glacial meltwater in Central Asia (Kong and Pang 2012, Li et al 2015a, Sun et al 2016a, 2016b, 2016c. As a result, streamflow variability as a response of inland rivers to summer rainfall is still unclear, especially in mountain areas.…”

Section: Introductionmentioning

confidence: 99%

“…They provide additional information for identifying source areas and flow pathways under various flow conditions of a catchment (Shanley et al 2002, McGuire and McDonnell 2006, Tekleab et al 2013, Zarei and Akhondali et al 2014, Sun et al 2015. Recent studies in high-elevation catchments have shown that isotope hydrograph separation (IHS) based on isotopic and geochemical tracers is effective for exploring complex hydrological processes (Penna et al 2016) and assessing streamflow sources at the annual (Li et al 2014, 2015a, 2015b, Sun et al 2015, Zhou et al 2015 and seasonal (Kong andPang 2012, Penna et al 2016) scales. It is also useful in estimating the contributions of glacier/snowmelt, groundwater and precipitation to streamflow, and in determining the importance of various groundwater recharge sources (Joel et al, 2009, Pang et al 2011, Tao et al 2012, Wang 2014, Sun et al 2016a.…”

Section: Introductionmentioning

confidence: 99%

Quantitative evaluation of the rainfall influence on streamflow in an inland mountainous river basin within Central Asia

Sun

Shen

Chen

et al. 2017

Hydrological Sciences Journal

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Stable isotopes of water have been widely used in understanding the hydrological functions of alpine inland catchments. This study identifies dominant runoff generation mechanisms based on isotopic data (δ 18 O and δ 2 H) of 487 rainwater and river-water samples from three tributaries in the Tarim River Basin in China for the period May-September 2013. The isotope hydrograph separation results provide a comprehensive overview of the rainfall influence on hydrological processes. Stream water and groundwater have varied responses to different intensities of rainfall events. Only a small proportion of rainfall is directly transported to the stream during such events. An inconsistent temporal trend of event water contribution is observed in the three catchments. The average fractional contributions of rainfall for the Tizinafu, Kumalak and Huangshuigou rivers are 10.3% (±1.1%), 9.7% (±2.9%) and 8.7% (±2.4%), respectively.

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Can monsoon moisture arrive in the Qilian Mountains in summer?

Cited by 49 publications

References 45 publications

The effect of moisture source and synoptic conditions on precipitation isotopes in arid central Asia

The effect of moisture source and synoptic conditions on precipitation isotopes in arid central Asia

Contribution of Recycled Moisture to Precipitation in Northeastern Tibetan Plateau: A Case Study Based on Bayesian Estimation

Quantitative evaluation of the rainfall influence on streamflow in an inland mountainous river basin within Central Asia

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