The Complexity of Moisture Sources Affects the Altitude Effect of Stable Isotopes of Precipitation in Inland Mountainous Regions
Abstract From a global perspective, the stable isotope altitude effect is crucial for understanding climate information. However, the intensity of this effect can be influenced by the source of moisture, particularly in inland mountainous regions where the moisture sources are complex. Different com...
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Wiley
2024-06-01
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| Series: | Water Resources Research |
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| Online Access: | https://doi.org/10.1029/2023WR036084 |
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| author | Longhu Chen Guofeng Zhu Xinrui Lin Rui Li Siyu Lu Yinying Jiao Dongdong Qiu Gaojia Meng Qinqin Wang |
| author_facet | Longhu Chen Guofeng Zhu Xinrui Lin Rui Li Siyu Lu Yinying Jiao Dongdong Qiu Gaojia Meng Qinqin Wang |
| author_sort | Longhu Chen |
| collection | DOAJ |
| description | Abstract From a global perspective, the stable isotope altitude effect is crucial for understanding climate information. However, the intensity of this effect can be influenced by the source of moisture, particularly in inland mountainous regions where the moisture sources are complex. Different combinations of moisture sources might affect the altitude effect. Focusing on the upper Shiyang River in the northern part of the Qilian Mountains in China, this study calculated the proportion of recycled moisture in precipitation and utilized the HYSPLIT model to determine the source of advective moisture. It explored the characteristics and mechanisms by which moisture sources affect the spatiotemporal variations in precipitation isotope effects within the study area. The findings indicated that: (a) The altitude effect follows a seasonal pattern: winter < autumn < spring < summer, with a reverse effect in winter. (b) As the contribution of recycled moisture to precipitation increases, the altitude effect of stable isotopes weakens, primarily due to the disruptive influence of recycled moisture on this effect. (c) The altitude effect of stable isotopes in precipitation is determined by the direction of the moisture source and its attributes. When the primary source of advective moisture runs perpendicular to the mountain range and the moisture migration speed is slow, the altitude effect is pronounced. Thus, although temperature directly causes the altitude effect, water vapor sources significantly influence it in inland mountainous regions. |
| format | Article |
| id | doaj-art-07c49d4ee7384066a5e84b8a2f0e38e4 |
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| issn | 0043-1397 1944-7973 |
| language | English |
| publishDate | 2024-06-01 |
| publisher | Wiley |
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| series | Water Resources Research |
| spelling | doaj-art-07c49d4ee7384066a5e84b8a2f0e38e42025-08-20T02:09:25ZengWileyWater Resources Research0043-13971944-79732024-06-01606n/an/a10.1029/2023WR036084The Complexity of Moisture Sources Affects the Altitude Effect of Stable Isotopes of Precipitation in Inland Mountainous RegionsLonghu Chen0Guofeng Zhu1Xinrui Lin2Rui Li3Siyu Lu4Yinying Jiao5Dongdong Qiu6Gaojia Meng7Qinqin Wang8College of Geography and Environmental Science Northwest Normal University Lanzhou ChinaCollege of Geography and Environmental Science Northwest Normal University Lanzhou ChinaCollege of Geography and Environmental Science Northwest Normal University Lanzhou ChinaCollege of Geography and Environmental Science Northwest Normal University Lanzhou ChinaCollege of Geography and Environmental Science Northwest Normal University Lanzhou ChinaCollege of Geography and Environmental Science Northwest Normal University Lanzhou ChinaCollege of Geography and Environmental Science Northwest Normal University Lanzhou ChinaCollege of Geography and Environmental Science Northwest Normal University Lanzhou ChinaCollege of Geography and Environmental Science Northwest Normal University Lanzhou ChinaAbstract From a global perspective, the stable isotope altitude effect is crucial for understanding climate information. However, the intensity of this effect can be influenced by the source of moisture, particularly in inland mountainous regions where the moisture sources are complex. Different combinations of moisture sources might affect the altitude effect. Focusing on the upper Shiyang River in the northern part of the Qilian Mountains in China, this study calculated the proportion of recycled moisture in precipitation and utilized the HYSPLIT model to determine the source of advective moisture. It explored the characteristics and mechanisms by which moisture sources affect the spatiotemporal variations in precipitation isotope effects within the study area. The findings indicated that: (a) The altitude effect follows a seasonal pattern: winter < autumn < spring < summer, with a reverse effect in winter. (b) As the contribution of recycled moisture to precipitation increases, the altitude effect of stable isotopes weakens, primarily due to the disruptive influence of recycled moisture on this effect. (c) The altitude effect of stable isotopes in precipitation is determined by the direction of the moisture source and its attributes. When the primary source of advective moisture runs perpendicular to the mountain range and the moisture migration speed is slow, the altitude effect is pronounced. Thus, although temperature directly causes the altitude effect, water vapor sources significantly influence it in inland mountainous regions.https://doi.org/10.1029/2023WR036084stable isotopes of precipitationaltitude effectmoisture sourcesinside the continent |
| spellingShingle | Longhu Chen Guofeng Zhu Xinrui Lin Rui Li Siyu Lu Yinying Jiao Dongdong Qiu Gaojia Meng Qinqin Wang The Complexity of Moisture Sources Affects the Altitude Effect of Stable Isotopes of Precipitation in Inland Mountainous Regions Water Resources Research stable isotopes of precipitation altitude effect moisture sources inside the continent |
| title | The Complexity of Moisture Sources Affects the Altitude Effect of Stable Isotopes of Precipitation in Inland Mountainous Regions |
| title_full | The Complexity of Moisture Sources Affects the Altitude Effect of Stable Isotopes of Precipitation in Inland Mountainous Regions |
| title_fullStr | The Complexity of Moisture Sources Affects the Altitude Effect of Stable Isotopes of Precipitation in Inland Mountainous Regions |
| title_full_unstemmed | The Complexity of Moisture Sources Affects the Altitude Effect of Stable Isotopes of Precipitation in Inland Mountainous Regions |
| title_short | The Complexity of Moisture Sources Affects the Altitude Effect of Stable Isotopes of Precipitation in Inland Mountainous Regions |
| title_sort | complexity of moisture sources affects the altitude effect of stable isotopes of precipitation in inland mountainous regions |
| topic | stable isotopes of precipitation altitude effect moisture sources inside the continent |
| url | https://doi.org/10.1029/2023WR036084 |
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