Short-term stable isotopic composition variations of near-surface atmospheric water vapor in four semiarid areas (Binxian, Guyuan, Wujiachuan, Yuzhong) in interior northwestern China
文献类型：期刊论文
| 作者 | Xing, Meng1; Liu, Weiguo1,2 |
| 刊名 | ENVIRONMENTAL EARTH SCIENCES
 |
| 出版日期 | 2016-09-01 |
| 卷号 | 75期号:18 |
| 关键词 | Atmospheric Water Vapor Stable Isotopes Deuterium Excess Water Cycle |
| DOI | 10.1007/s12665-016-6085-4 |
| 文献子类 | Article |
| 英文摘要 | This study used an in situ method to monitor short-term atmospheric water vapor concentrations and stable isotopic composition (delta O-18(v) and delta D-v) variations at four sites in semiarid areas of northwestern China during 2014. On a spatial scale, we distinguish a south-to-north difference in atmospheric water vapor concentration. The spatial patterns of water vapor lines (WVLs) may be associated with regional setting. Smaller slopes of WVLs in Guyuan and Yuzhong may reflect dew evaporation, and a steeper slope of WVL in Wujiachuan may be representative of atmospheric water vapor isotopic composition in equilibrium with that of precipitation. On a temporal scale, delta O-18(v), delta D-v, and d(v) exhibited variable patterns, indicating various influences of entrainment, local evapotranspiration (ET), and dew evaporation. A deceasing trend of atmospheric water vapor delta O-18(v) and delta D-v in Wujiachuan indicates that the entrainment effect surpassed that of evaporation; an increasing trend in Guyuan and Yuzhong may be attributed to the effect of evaporation surpassing that of entrainment. Based on a precipitation event at Guyuan, the lateral air mass transported from Wujiachuan may be the reason for rapid recovery of atmospheric vapor isotopic composition to the baseline value and a looping pattern between atmospheric water vapor mixing ratio (w) and delta O-18(v) observed at Guyuan. Linear correlation coefficients of delta O-18(v) with w varied from 0.02 to 0.88 at four study sites. Location differences may be the reason for the capability of w to explain why the variability of atmospheric water vapor isotopic composition was greater at Wujiachuan than at Binxian. Dew evaporation after the precipitation event may be the major reason for eliminating the relationship between w and delta O-18(v) at Guyuan and Yuzhong. Although synoptic conditions were similar at the four sites, dv variations may be controlled by ET, entrainment, and dew formation at different sites and times. |
| WOS关键词 | DEUTERIUM EXCESS ; TIBETAN PLATEAU ; PRECIPITATION ; DELTA-O-18 ; MOISTURE ; RATIOS ; CALIBRATION ; EVAPORATION ; DELTA-H-2 ; REVEAL |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000384333000039 |
| 源URL | [http://ir.ieecas.cn/handle/361006/5682]  |
| 专题 | 地球环境研究所_加速器质谱中心 |
| 作者单位 | 1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 2.Xi An Jiao Tong Univ, Sch Human Settlement & Civil Engn, Xian 710049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xing, Meng,Liu, Weiguo. Short-term stable isotopic composition variations of near-surface atmospheric water vapor in four semiarid areas (Binxian, Guyuan, Wujiachuan, Yuzhong) in interior northwestern China[J]. ENVIRONMENTAL EARTH SCIENCES,2016,75(18). |
| APA | Xing, Meng,&Liu, Weiguo.(2016).Short-term stable isotopic composition variations of near-surface atmospheric water vapor in four semiarid areas (Binxian, Guyuan, Wujiachuan, Yuzhong) in interior northwestern China.ENVIRONMENTAL EARTH SCIENCES,75(18). |
| MLA | Xing, Meng,et al."Short-term stable isotopic composition variations of near-surface atmospheric water vapor in four semiarid areas (Binxian, Guyuan, Wujiachuan, Yuzhong) in interior northwestern China".ENVIRONMENTAL EARTH SCIENCES 75.18(2016). |
入库方式： OAI收割
来源：地球环境研究所
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