PreprintArticleVersion 1Preserved in Portico This version is not peer-reviewed
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
Version 1
: Received: 7 August 2023 / Approved: 8 August 2023 / Online: 8 August 2023 (10:30:06 CEST)
How to cite:
Zhang, T.; Bian, S.; Ji, B.; Li, W.; Zong, J. 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. Preprints2023, 2023080597. https://doi.org/10.20944/preprints202308.0597.v1
Zhang, T.; Bian, S.; Ji, B.; Li, W.; Zong, J. 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. Preprints 2023, 2023080597. https://doi.org/10.20944/preprints202308.0597.v1
Zhang, T.; Bian, S.; Ji, B.; Li, W.; Zong, J. 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. Preprints2023, 2023080597. https://doi.org/10.20944/preprints202308.0597.v1
APA Style
Zhang, T., Bian, S., Ji, B., Li, W., & Zong, J. (2023). 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. Preprints. https://doi.org/10.20944/preprints202308.0597.v1
Chicago/Turabian Style
Zhang, T., Wanqiu Li and Jingwen Zong. 2023 "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" Preprints. https://doi.org/10.20944/preprints202308.0597.v1
Abstract
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 weaker signal magnitude in adjacent areas. TWS anomaly in Dnieper River basin, where characteristic with medium scale and adjacent weak TWS anomaly, is estimate in this work. Two categories of leakage error repaired method (including forward modeling, Data-driven, single and multiple scaling factor) are employed. Root mean square error (RMSE) and Nash-Sutcliffe Efficiency (NSE) are used to evaluate the efficiency of methods. Compare to independent methods, TWS anomaly inverted by multiple scaling factor depending on CPC Soil Moisture model is more accurate in terms with RMSE 2.32 and NSE 0.88, which scaling factors corresponding to trend term 1.02, annual term 1.04, and semi-annual term 1.14. Further, comprehensive climate insights behind of the TWS anomaly were confirmed. The temperate continental climate of this River basin is shown, according to the variation of TWS anomaly in spatial domain. Snowmelt is significant role in TWS anomaly of Dnieper River basin, which is accord with the precipitation record and the 14 years temperature spatial distribution of February. Overall, we compare TWS anomaly recovered by single and multiple scaling method, the leakage signal originates mainly from semi-annual term of the TWS anomaly.
Keywords
GRACE; terrestrial water storage (TWS) anomaly; leakage error recover; Dnieper River basin; climate pattern
Subject
Environmental and Earth Sciences, Geophysics and Geology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
