Global High-Resolution Terrestrial Water Storage Anomalies through a Dynamic Soft-Constrained Deep Learning Paradigm

DOI

This dataset provides a comprehensive, high-resolution global record of monthly Terrestrial Water Storage Anomalies (TWSA) from April 2002 to December 2022. It was generated to address the spatial resolution limitations of raw satellite gravimetry observations from the GRACE and GRACE-FO missions, offering a product suitable for regional and basin-scale hydrological analysis. The dataset was simulated using a novel deep learning framework. This model spatially downscales the low-resolution (~300 km) JPL GRACE/GRACE-FO Mascon solutions (Watkins et al., 2015; Wiese et al., 2016; Landerer et al., 2020; Wiese et al., 2023) to a high resolution of 50 km (0.5-degree grid). The core of the methodology is a dynamic soft-constrained paradigm, where the model is simultaneously guided by the observational accuracy of GRACE/GRACE-FO data and the high-resolution spatial patterns from the WaterGAP Global Hydrology Model (Müller Schmied et al., 2023) and ERA5 reanalysis data (Hersbach et al., 2023). The influence of these constraints is dynamically weighted at each training step based on the evolving correlation between the model's prediction and the high-resolution inputs, ensuring an optimal simulation of observational integrity and high-resolution detail.

Identifier
DOI https://doi.org/10.5880/GFZ.DQTO.2025.001
Related Identifier Cites https://doi.org/10.24381/cds.f17050d7
Related Identifier Cites https://doi.org/10.1029/2020GL088306
Related Identifier Cites https://doi.org/10.5194/gmd-2023-213
Related Identifier Cites https://doi.org/10.1002/2014JB011547
Related Identifier Cites https://doi.org/10.1002/2016WR019344
Related Identifier Cites https://doi.org/10.5067/TEMSC-3MJ63
Related Identifier IsSupplementTo https://doi.org/10.1016/j.jhydrol.2026.135015
Metadata Access http://doidb.wdc-terra.org/oaip/oai?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:doidb.wdc-terra.org:8623
Provenance
Creator Uz, Metehan ORCID logo; Atman, Kazım Gökhan ORCID logo; Akyılmaz, Orhan ORCID logo; Shum, CK ORCID logo
Publisher GFZ Data Services
Contributor Uz, Metehan
Publication Year 2025
Rights CC BY 4.0; http://creativecommons.org/licenses/by/4.0/
OpenAccess true
Contact Uz, Metehan (GFZ Helmholtz Centre for Geosciences, Potsdam, Germany)
Representation
Resource Type Dataset
Discipline Geosciences
Spatial Coverage (-179.750W, -89.750S, 179.750E, 89.750N); Global land areas (excluding Greenland and Antarctica) and temporal coverage: April 2002 – December 2022
Temporal Coverage Begin 2002-04-15T00:00:00Z
Temporal Coverage End 2022-12-15T00:00:00Z