Atayi, Julia, Anornu, Geophrey K., Awotwi, Alfred, Andam-Akorful, Samuel A., Kabo-bah, Amos T., Twumasi, Yaw A., Adu-Afari, Emmanuel and Anim-Gyampo, Maxwell
2023.
Terrestrial water storage and climate variability study of the Volta River Basin, West Africa.
Theoretical and Applied Climatology
10.1007/s00704-023-04636-5
Item availability restricted. |
PDF
- Accepted Post-Print Version
Restricted to Repository staff only until 26 September 2024 due to copyright restrictions. Download (346kB) |
Abstract
The Volta Basin in West Africa plays a crucial role in supporting the livelihoods of millions of people, and effective management of its water resources is essential for climate change adaptation. This study utilized remote sensing technology, specifically the Gravity Recovery and Climate Experiment (GRACE), to assess terrestrial water storage (TWS) and its response to climate variability within the Volta Basin. The methodology involved integrating GRACE data with ground-based measurements, climate models, and other satellite observations to enhance the accuracy of TWS assessment. Despite numerous studies conducted within the basin, this research employed additional statistical techniques such as Independent Component Analysis (ICA) and El Niño Southern Oscillation (ENSO). It also utilized Climate Hazard Group Infrared Precipitation with Station (CHIRPS) to determine variations in TWS and climate variability observed within the Volta Basin. The results provide valuable insights into TWS dynamics, highlighting the complex interplay between precipitation patterns, groundwater storage, and surface water availability. Also, it was revealed that rainfall signals were strongest in the northernmost part of the basin, reaching a maximum value of 10 mm, while the lowest value of 5.5 mm was recorded in the southern part of the basin. Similarly, TWS signals were highest in the northern and lowest in the southern part of the basin, exhibiting values related to that of rainfall. Additionally, the highest TWS value of 250 mm was identified between 2010 and 2012. The increase in TWS during this period correlates with the occurrence of La Niña that happened between 2010 and 2012. This study offers essential information for water resource management, drought monitoring, flood forecasting, and climate change adaptation strategies not only within the Volta Basin but also in other basins across the globe.
Item Type: | Article |
---|---|
Date Type: | Published Online |
Status: | Published |
Schools: | Earth and Environmental Sciences |
Publisher: | Springer |
ISSN: | 0177-798X |
Date of First Compliant Deposit: | 23 October 2023 |
Date of Acceptance: | 31 August 2023 |
Last Modified: | 10 Nov 2023 22:54 |
URI: | https://orca.cardiff.ac.uk/id/eprint/163415 |
Actions (repository staff only)
Edit Item |