Estimation of Terrestrial Water Storage Changes at Small Basin Scales Based on Multi-Source Data

Li, Qin; Liu, Xiuguo; Zhong, Yulong; Wang, Mengmeng; Zhu, Shuang

doi:10.3390/rs13163304

Cited by 5 publications

(2 citation statements)

References 68 publications

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“…The water budget equation is used to characterize the water flow in and out of a region/basin hydrological system during a given period [8,51,52], and its specific expression in North China can be established as [1,24] dTWSA dt…”

Section: Water Budget Estimatesmentioning

confidence: 99%

Evaluation of Terrestrial Water Storage and Flux in North China by Using GRACE Combined Gravity Field Solutions and Hydrometeorological Models

et al. 2023

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To enrich the understanding of the dynamic evolution of the water resources in North China, terrestrial water storage anomalies (TWSA) from January 2003 to June 2017 are derived using the new GRACE time-variable gravity field model Tongji-GraceCom. Additionally, the spatiotemporal characteristics of terrestrial water fluxes (TWF) at multiple time scales are analyzed based on the water budget theory in conjunction with hydrometeorological and statistical data. The results show that the quality of the Tongji-GraceCom model is superior to the state-of-art spherical harmonic models (CSR RL06 and JPL RL06), with the signal-to-noise ratio improving by 10–16%. After correcting the leakage errors with a reliable correction method, the inferred TWSA in North China presents a significant downward trend, amounting to −1.61 ± 0.05 cm/yr, with the most serious TWSA depletion mainly clustering in the south-central area. The TWFs derived from GRACE and from hydrometeorological elements are in good agreement and both exhibit significant seasonal fluctuations induced by tracking the periodic movements of meteorological factors. However, unlike precipitation which manifests in an increasing trend, both TWFs reflect the obvious decreasing trends, indicating that North China is suffering from severe water deficits, which are mainly attributed to the enhanced evaporation and extensive groundwater pumping for agricultural irrigation.

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Section: Water Budget Estimatesmentioning

confidence: 99%

Evaluation of Terrestrial Water Storage and Flux in North China by Using GRACE Combined Gravity Field Solutions and Hydrometeorological Models

et al. 2023

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“…Those regions are characteristic of larger areas (>10 6 km 2 ) or stronger signals attributed to mass changes. Even though some works in the literature focus on the medium and small basins [32], such as Finland, the Liao River basin, and the Aral Sea basin [33][34][35][36], distinct mass changes or redistributions are also demonstrated in those regions. However, rarely has the focus been switched to the regions with medium-scale and weak adjacent areas.…”

Section: Introductionmentioning

confidence: 99%

The Extraction of Terrestrial Water Storage Anomaly from GRACE in the Region with Medium Scale and Adjacent Weak Signal Area: A Case for the Dnieper River Basin

Zhang,

Bian,

et al. 2024

Remote Sensing

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The accuracy of estimating changes in terrestrial water storage (TWS) using Gravity Recovery and Climate Experiment (GRACE) level-2 products is limited by the leakage effect resulting from post-processing and the weak signal magnitude in adjacent areas. The TWS anomaly from 2003 to 2016 in the Dnieper River basin, with characteristics of medium scale and an adjacent weak TWS anomaly area, are estimated in this work. Two categories of leakage error repair approaches (including forward modeling, data-driven, single, and multiple scaling factor approaches) are employed. Root mean square error (RMSE) and Nash–Sutcliffe Efficiency (NSE) are used to evaluate the efficiency of approaches. The TWS anomaly inverted by the forward modeling approach (FM) is more accurate in terms of RMSE 3.04 and NSE 0.796. We compared single and multiple scaling approaches for the TWS anomaly and found that leakage signals mostly come from semi-annual terms. From the recovered results demonstrated in the spatial domain, the South of Dnieper River basin is more sensitive to the leakage effect because of it is adjacent to a weak hydrological signal region near the Black Sea. Further, comprehensive climate insights and physical mechanisms behind the TWS anomaly were confirmed. The temperate continental climate of this river basin is shown according to the variation in TWS anomaly in the spatial domain. Snowmelt plays a significant role in the TWS anomaly of the Dnieper River basin, following the precipitation record and the 14-year temperature spatial distribution for February. We compared single and multiple scaling approaches for the TWS anomaly and found that leakage signals mostly come from semi-annual terms.

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Analysis of watershed terrestrial water storage anomalies by Bi-LSTM with X-11 time series prediction combined model

Su,

Feng,

et al. 2024

Geosci J

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Estimation of Terrestrial Water Storage Changes at Small Basin Scales Based on Multi-Source Data

Cited by 5 publications

References 68 publications

Evaluation of Terrestrial Water Storage and Flux in North China by Using GRACE Combined Gravity Field Solutions and Hydrometeorological Models

Evaluation of Terrestrial Water Storage and Flux in North China by Using GRACE Combined Gravity Field Solutions and Hydrometeorological Models

The Extraction of Terrestrial Water Storage Anomaly from GRACE in the Region with Medium Scale and Adjacent Weak Signal Area: A Case for the Dnieper River Basin

Analysis of watershed terrestrial water storage anomalies by Bi-LSTM with X-11 time series prediction combined model

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