TITLE:
Decadal Trends and Periodicity of Terrestrial Water Storage in Nigeria-GRACE Satellite Observations
AUTHORS:
Peter Adetokunbo, Ayodeji Adekunle Eluyemi, Segun Aguda, Eniolayimika Jegede, Tunji Omoseyin, Oluseun Adetola Sanuade, Rasheed Babatunde Adesina
KEYWORDS:
Spatio-Temporal Variation, Total Water Storage, Grace Satellite, Nigeria
JOURNAL NAME:
Open Journal of Geology,
Vol.15 No.7,
July
10,
2025
ABSTRACT: This study investigates spatiotemporal variations in Terrestrial Water Storage (TWS) over Nigeria during the period 2002-2024 using Gravity Recovery and Climate Experiment (GRACE) satellite data. We employed Google Earth Engine (GEE) and analytical framework including trend analysis, change point detection, anomaly detection, frequency, and rate of change analyses to characterize hydrological dynamics. Results show a statistically significant increasing trend in water storage (Mann-Kendall test: p-value