Providing Enhanced Insights into Groundwater Exchange Patterns through Downscaled GRACE Data
The measurement of groundwater exchange between neighboring regions is a critical topic in water resource management and can usually be achieved through a combination of field investigations and the use of groundwater flow models. In this study, we employed the water balance and Darcy’s law methods,...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-02-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/16/5/812 |
| _version_ | 1797263944532885504 |
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| author | Jianchong Sun Litang Hu Junchao Zhang Wenjie Yin |
| author_facet | Jianchong Sun Litang Hu Junchao Zhang Wenjie Yin |
| author_sort | Jianchong Sun |
| collection | DOAJ |
| description | The measurement of groundwater exchange between neighboring regions is a critical topic in water resource management and can usually be achieved through a combination of field investigations and the use of groundwater flow models. In this study, we employed the water balance and Darcy’s law methods, utilizing downscaled Gravity Recovery and Climate Experiment (GRACE) and GRACE-Follow On (GRACE-FO) data to assess groundwater exchange patterns in the Beijing-Tianjin-Hebei (BTH) region of China. Additionally, we determined the contributions of human activities and climate factors to the observed variations via residual analysis. The results revealed a consistent decrease in groundwater storage in the study area since 2008, especially in the spring and summer months. The groundwater exchange rates calculated by 1° and 0.05° groundwater storage anomalies (GWSAs) were basically consistent, and the downscaled GWSAs could better reflect the small-scale groundwater exchange characteristics. The groundwater exchange rate showed a decreasing trend from the Piedmont plain to the coastal areas. A notable trend of declining groundwater exchange between the Taihang Mountains and Piedmont plains was observed, and the downward trend gradually intensified from north to south between 2003 and 2007. After 2008, there was an increasing trend, and coastal areas exhibited the smallest amount of groundwater exchange. Human activities emerged as the predominant factor accounting for more than 90.9% of the overall reduction in groundwater storage, while climate change imposed a minimal influence on groundwater storage variations. The insights obtained in this study hold significant implications for groundwater resource planning and management in the region. |
| first_indexed | 2024-04-25T00:21:03Z |
| format | Article |
| id | doaj.art-59a8924d962f4a7f83dedb30815cbce5 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-04-25T00:21:03Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-59a8924d962f4a7f83dedb30815cbce52024-03-12T16:54:06ZengMDPI AGRemote Sensing2072-42922024-02-0116581210.3390/rs16050812Providing Enhanced Insights into Groundwater Exchange Patterns through Downscaled GRACE DataJianchong Sun0Litang Hu1Junchao Zhang2Wenjie Yin3College of Water Sciences, Beijing Normal University, Beijing 100875, ChinaCollege of Water Sciences, Beijing Normal University, Beijing 100875, ChinaCollege of Water Sciences, Beijing Normal University, Beijing 100875, ChinaSatellite Application Center for Ecology and Environment, Ministry of Ecology and Environment (MEE), Beijing 100094, ChinaThe measurement of groundwater exchange between neighboring regions is a critical topic in water resource management and can usually be achieved through a combination of field investigations and the use of groundwater flow models. In this study, we employed the water balance and Darcy’s law methods, utilizing downscaled Gravity Recovery and Climate Experiment (GRACE) and GRACE-Follow On (GRACE-FO) data to assess groundwater exchange patterns in the Beijing-Tianjin-Hebei (BTH) region of China. Additionally, we determined the contributions of human activities and climate factors to the observed variations via residual analysis. The results revealed a consistent decrease in groundwater storage in the study area since 2008, especially in the spring and summer months. The groundwater exchange rates calculated by 1° and 0.05° groundwater storage anomalies (GWSAs) were basically consistent, and the downscaled GWSAs could better reflect the small-scale groundwater exchange characteristics. The groundwater exchange rate showed a decreasing trend from the Piedmont plain to the coastal areas. A notable trend of declining groundwater exchange between the Taihang Mountains and Piedmont plains was observed, and the downward trend gradually intensified from north to south between 2003 and 2007. After 2008, there was an increasing trend, and coastal areas exhibited the smallest amount of groundwater exchange. Human activities emerged as the predominant factor accounting for more than 90.9% of the overall reduction in groundwater storage, while climate change imposed a minimal influence on groundwater storage variations. The insights obtained in this study hold significant implications for groundwater resource planning and management in the region.https://www.mdpi.com/2072-4292/16/5/812groundwater exchangeGRACEdynamic downscalingBTH regionsgroundwater storage |
| spellingShingle | Jianchong Sun Litang Hu Junchao Zhang Wenjie Yin Providing Enhanced Insights into Groundwater Exchange Patterns through Downscaled GRACE Data Remote Sensing groundwater exchange GRACE dynamic downscaling BTH regions groundwater storage |
| title | Providing Enhanced Insights into Groundwater Exchange Patterns through Downscaled GRACE Data |
| title_full | Providing Enhanced Insights into Groundwater Exchange Patterns through Downscaled GRACE Data |
| title_fullStr | Providing Enhanced Insights into Groundwater Exchange Patterns through Downscaled GRACE Data |
| title_full_unstemmed | Providing Enhanced Insights into Groundwater Exchange Patterns through Downscaled GRACE Data |
| title_short | Providing Enhanced Insights into Groundwater Exchange Patterns through Downscaled GRACE Data |
| title_sort | providing enhanced insights into groundwater exchange patterns through downscaled grace data |
| topic | groundwater exchange GRACE dynamic downscaling BTH regions groundwater storage |
| url | https://www.mdpi.com/2072-4292/16/5/812 |
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