Precipitation Changes in the Three Gorges Reservoir Area and the Relationship with Water Level Change
As the largest hydroelectric project worldwide, previous studies indicate that the Three Gorges Dam (TGD) affects the local climate because of the changes of hydrological cycle caused by the impounding and draining of the TGD. However, previous studies do not analyze the long-term precipitation chan...
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| Format: | Article |
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MDPI AG
2021-09-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/21/18/6110 |
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| author | Qin Li Xiuguo Liu Yulong Zhong Mengmeng Wang Manxing Shi |
| author_facet | Qin Li Xiuguo Liu Yulong Zhong Mengmeng Wang Manxing Shi |
| author_sort | Qin Li |
| collection | DOAJ |
| description | As the largest hydroelectric project worldwide, previous studies indicate that the Three Gorges Dam (TGD) affects the local climate because of the changes of hydrological cycle caused by the impounding and draining of the TGD. However, previous studies do not analyze the long-term precipitation changes before and after the impoundment, and the variation characteristics of local precipitation remain elusive. In this study, we use precipitation anomaly data derived from the CN05.1 precipitation dataset between 1988 and 2017 to trace the changes of precipitation before and after the construction of the TGD (i.e., 1988–2002 and 2003–2017), in the Three Gorges Reservoir Area (TGRA). Results showed that the annual and dry season precipitation anomaly in the TGRA presented an increasing trend, and the precipitation anomaly showed a slight decrease during the flood season. After the impoundment of TGD, the precipitation concentration degree in the TGRA decreased, indicating that the precipitation became increasingly uniform, and the precipitation concentration period insignificantly increased. A resonance phenomenon between the monthly average water level and precipitation anomaly occurred in the TGRA after 2011 and showed a positive correlation. Our findings revealed the change of local precipitation characteristics before and after the impoundment of TGD and showed strong evidence that this change had a close relationship with the water level. |
| first_indexed | 2024-03-10T07:13:07Z |
| format | Article |
| id | doaj.art-079b2703682c4a0c918d37f13a0a0297 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T07:13:07Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-079b2703682c4a0c918d37f13a0a02972023-11-22T15:11:46ZengMDPI AGSensors1424-82202021-09-012118611010.3390/s21186110Precipitation Changes in the Three Gorges Reservoir Area and the Relationship with Water Level ChangeQin Li0Xiuguo Liu1Yulong Zhong2Mengmeng Wang3Manxing Shi4School of Geography and Information Engineering, China University of Geosciences, Wuhan 430078, ChinaSchool of Geography and Information Engineering, China University of Geosciences, Wuhan 430078, ChinaSchool of Geography and Information Engineering, China University of Geosciences, Wuhan 430078, ChinaSchool of Geography and Information Engineering, China University of Geosciences, Wuhan 430078, ChinaSchool of Geography and Information Engineering, China University of Geosciences, Wuhan 430078, ChinaAs the largest hydroelectric project worldwide, previous studies indicate that the Three Gorges Dam (TGD) affects the local climate because of the changes of hydrological cycle caused by the impounding and draining of the TGD. However, previous studies do not analyze the long-term precipitation changes before and after the impoundment, and the variation characteristics of local precipitation remain elusive. In this study, we use precipitation anomaly data derived from the CN05.1 precipitation dataset between 1988 and 2017 to trace the changes of precipitation before and after the construction of the TGD (i.e., 1988–2002 and 2003–2017), in the Three Gorges Reservoir Area (TGRA). Results showed that the annual and dry season precipitation anomaly in the TGRA presented an increasing trend, and the precipitation anomaly showed a slight decrease during the flood season. After the impoundment of TGD, the precipitation concentration degree in the TGRA decreased, indicating that the precipitation became increasingly uniform, and the precipitation concentration period insignificantly increased. A resonance phenomenon between the monthly average water level and precipitation anomaly occurred in the TGRA after 2011 and showed a positive correlation. Our findings revealed the change of local precipitation characteristics before and after the impoundment of TGD and showed strong evidence that this change had a close relationship with the water level.https://www.mdpi.com/1424-8220/21/18/6110precipitationimpoundmentwater levelThree Gorges Project (TGP)Precipitation Concentration Degree (PCD)Precipitation Concentration Period (PCP) |
| spellingShingle | Qin Li Xiuguo Liu Yulong Zhong Mengmeng Wang Manxing Shi Precipitation Changes in the Three Gorges Reservoir Area and the Relationship with Water Level Change Sensors precipitation impoundment water level Three Gorges Project (TGP) Precipitation Concentration Degree (PCD) Precipitation Concentration Period (PCP) |
| title | Precipitation Changes in the Three Gorges Reservoir Area and the Relationship with Water Level Change |
| title_full | Precipitation Changes in the Three Gorges Reservoir Area and the Relationship with Water Level Change |
| title_fullStr | Precipitation Changes in the Three Gorges Reservoir Area and the Relationship with Water Level Change |
| title_full_unstemmed | Precipitation Changes in the Three Gorges Reservoir Area and the Relationship with Water Level Change |
| title_short | Precipitation Changes in the Three Gorges Reservoir Area and the Relationship with Water Level Change |
| title_sort | precipitation changes in the three gorges reservoir area and the relationship with water level change |
| topic | precipitation impoundment water level Three Gorges Project (TGP) Precipitation Concentration Degree (PCD) Precipitation Concentration Period (PCP) |
| url | https://www.mdpi.com/1424-8220/21/18/6110 |
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