Lake Evaporation and Its Effects on Basin Evapotranspiration and Lake Water Storage on the Inner Tibetan Plateau
Abstract Effects of lake evaporation (EW) on basin evapotranspiration (ETB) and lake water storage change (LWSC) at lake‐basin scale have never been reported for most basins on the inner Tibetan Plateau (IB). In this study, EW of 118 large lakes in 95 closed lake‐basins were estimated, and its effec...
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Wiley
2023-10-01
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| Series: | Water Resources Research |
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| Online Access: | https://doi.org/10.1029/2022WR034030 |
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| author | Liuming Wang Junxiao Wang Lachun Wang Liping Zhu Xingong Li |
| author_facet | Liuming Wang Junxiao Wang Lachun Wang Liping Zhu Xingong Li |
| author_sort | Liuming Wang |
| collection | DOAJ |
| description | Abstract Effects of lake evaporation (EW) on basin evapotranspiration (ETB) and lake water storage change (LWSC) at lake‐basin scale have never been reported for most basins on the inner Tibetan Plateau (IB). In this study, EW of 118 large lakes in 95 closed lake‐basins were estimated, and its effects on ETB and LWSC over 2001–2018 were examined using a derivative‐guided framework from the aspects of EW amount, rate, trend slope and inter‐annual variability. We found that EW amount has a high effect (17%) on regional ETB amount compared to the average lake area ratio (α) (∼5%), and the effect has increased significantly (2%/10 a). The spatial pattern of the effect is mainly controlled by α, and the increasing trend of α (0.6%/10 a) also dominated the increasing trend in regional ETB rate (0.30 mm/a) though with large spatial heterogeneity. Variance in α and EW rate have a minor effect (∼3%) on ETB variance, especially for the basins with lower α. The combination of quasi lake inflow (RL, 41%) and lake surface precipitation (PW, 16%) offset the depletion of EW (−43%), resulting in the surplus of regional lake water (LWSC > 0). The increase in EW mount, which is mainly from lake area expansion (90%), caused a decreasing trend in LWSC (i.e., slower growth rate) with a contribution of −59%. This suggests a negative feedback between lake area expansion and EW amount in the IB, and the feedback may continue with the predicted area increases. |
| format | Article |
| id | doaj-art-3af4f6bc20fe477a97a62a1a64199f1b |
| institution | Matheson Library |
| issn | 0043-1397 1944-7973 |
| language | English |
| publishDate | 2023-10-01 |
| publisher | Wiley |
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| series | Water Resources Research |
| spelling | doaj-art-3af4f6bc20fe477a97a62a1a64199f1b2025-06-27T07:44:25ZengWileyWater Resources Research0043-13971944-79732023-10-015910n/an/a10.1029/2022WR034030Lake Evaporation and Its Effects on Basin Evapotranspiration and Lake Water Storage on the Inner Tibetan PlateauLiuming Wang0Junxiao Wang1Lachun Wang2Liping Zhu3Xingong Li4School of Geography and Ocean Science Nanjing University Nanjing ChinaSchool of Public Administration Nanjing University of Finance & Economics Nanjing ChinaSchool of Geography and Ocean Science Nanjing University Nanjing ChinaKey Laboratory of Tibetan Environment Changes and Land Surface Processes (TEL) Institute of Tibetan Plateau Research (ITP) Chinese Academy of Sciences Beijing ChinaDepartment of Geography and Atmospheric Science University of Kansas Lawrence KS USAAbstract Effects of lake evaporation (EW) on basin evapotranspiration (ETB) and lake water storage change (LWSC) at lake‐basin scale have never been reported for most basins on the inner Tibetan Plateau (IB). In this study, EW of 118 large lakes in 95 closed lake‐basins were estimated, and its effects on ETB and LWSC over 2001–2018 were examined using a derivative‐guided framework from the aspects of EW amount, rate, trend slope and inter‐annual variability. We found that EW amount has a high effect (17%) on regional ETB amount compared to the average lake area ratio (α) (∼5%), and the effect has increased significantly (2%/10 a). The spatial pattern of the effect is mainly controlled by α, and the increasing trend of α (0.6%/10 a) also dominated the increasing trend in regional ETB rate (0.30 mm/a) though with large spatial heterogeneity. Variance in α and EW rate have a minor effect (∼3%) on ETB variance, especially for the basins with lower α. The combination of quasi lake inflow (RL, 41%) and lake surface precipitation (PW, 16%) offset the depletion of EW (−43%), resulting in the surplus of regional lake water (LWSC > 0). The increase in EW mount, which is mainly from lake area expansion (90%), caused a decreasing trend in LWSC (i.e., slower growth rate) with a contribution of −59%. This suggests a negative feedback between lake area expansion and EW amount in the IB, and the feedback may continue with the predicted area increases.https://doi.org/10.1029/2022WR034030lake evaporationlake effectattribution analysiswater balanceTibetan Plateau |
| spellingShingle | Liuming Wang Junxiao Wang Lachun Wang Liping Zhu Xingong Li Lake Evaporation and Its Effects on Basin Evapotranspiration and Lake Water Storage on the Inner Tibetan Plateau Water Resources Research lake evaporation lake effect attribution analysis water balance Tibetan Plateau |
| title | Lake Evaporation and Its Effects on Basin Evapotranspiration and Lake Water Storage on the Inner Tibetan Plateau |
| title_full | Lake Evaporation and Its Effects on Basin Evapotranspiration and Lake Water Storage on the Inner Tibetan Plateau |
| title_fullStr | Lake Evaporation and Its Effects on Basin Evapotranspiration and Lake Water Storage on the Inner Tibetan Plateau |
| title_full_unstemmed | Lake Evaporation and Its Effects on Basin Evapotranspiration and Lake Water Storage on the Inner Tibetan Plateau |
| title_short | Lake Evaporation and Its Effects on Basin Evapotranspiration and Lake Water Storage on the Inner Tibetan Plateau |
| title_sort | lake evaporation and its effects on basin evapotranspiration and lake water storage on the inner tibetan plateau |
| topic | lake evaporation lake effect attribution analysis water balance Tibetan Plateau |
| url | https://doi.org/10.1029/2022WR034030 |
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