A Machine Learning-Reconstructed Dataset of River Discharge, Temperature, and Heat Flux into the Arctic Ocean
Abstract Arctic rivers deliver 11% of the global river discharge volume into the Arctic Ocean, influencing ocean circulation, sea ice, and coastal ecosystems. Our understanding of these patterns is limited by substantial data gaps. To address this, we present the Reconstructed Arctic-draining river...
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Nature Portfolio
2025-07-01
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| Series: | Scientific Data |
| Online Access: | https://doi.org/10.1038/s41597-025-05582-9 |
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| author | Zihan Wang Fengming Hui Xiao Cheng |
| author_facet | Zihan Wang Fengming Hui Xiao Cheng |
| author_sort | Zihan Wang |
| collection | DOAJ |
| description | Abstract Arctic rivers deliver 11% of the global river discharge volume into the Arctic Ocean, influencing ocean circulation, sea ice, and coastal ecosystems. Our understanding of these patterns is limited by substantial data gaps. To address this, we present the Reconstructed Arctic-draining river DIscharge and Temperature (RADIT) dataset, a comprehensive record of reconstructed daily discharge, temperature, and heat flux for 25 major Arctic rivers from 1950 to 2023. Based on machine learning regression methods and ERA5-Land reanalysis data, we designed distinct reconstruction frameworks for discharge and temperature, considering the different characteristics of the observational data. We achieved high reconstruction accuracy, with median Nash–Sutcliffe efficiency (NSE) values of 0.861 for discharge and 0.906 for temperature. The RADIT dataset, with extensive spatial and temporal coverage, is a valuable resource for understanding Arctic hydrology and its response to climate change. It will improve Arctic freshwater budget quantification, climate model calibrations, and assessments of river impacts on the Arctic Ocean, enhancing our understanding of the role of the Arctic Ocean in the global climate system. |
| format | Article |
| id | doaj-art-88ce4c22c4764bfdb22f05422bddf909 |
| institution | DOAJ |
| issn | 2052-4463 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Data |
| spelling | doaj-art-88ce4c22c4764bfdb22f05422bddf9092025-08-20T03:04:22ZengNature PortfolioScientific Data2052-44632025-07-0112111710.1038/s41597-025-05582-9A Machine Learning-Reconstructed Dataset of River Discharge, Temperature, and Heat Flux into the Arctic OceanZihan Wang0Fengming Hui1Xiao Cheng2School of Geospatial Engineering and Science, Sun Yat-sen University, and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)School of Geospatial Engineering and Science, Sun Yat-sen University, and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)School of Geospatial Engineering and Science, Sun Yat-sen University, and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)Abstract Arctic rivers deliver 11% of the global river discharge volume into the Arctic Ocean, influencing ocean circulation, sea ice, and coastal ecosystems. Our understanding of these patterns is limited by substantial data gaps. To address this, we present the Reconstructed Arctic-draining river DIscharge and Temperature (RADIT) dataset, a comprehensive record of reconstructed daily discharge, temperature, and heat flux for 25 major Arctic rivers from 1950 to 2023. Based on machine learning regression methods and ERA5-Land reanalysis data, we designed distinct reconstruction frameworks for discharge and temperature, considering the different characteristics of the observational data. We achieved high reconstruction accuracy, with median Nash–Sutcliffe efficiency (NSE) values of 0.861 for discharge and 0.906 for temperature. The RADIT dataset, with extensive spatial and temporal coverage, is a valuable resource for understanding Arctic hydrology and its response to climate change. It will improve Arctic freshwater budget quantification, climate model calibrations, and assessments of river impacts on the Arctic Ocean, enhancing our understanding of the role of the Arctic Ocean in the global climate system.https://doi.org/10.1038/s41597-025-05582-9 |
| spellingShingle | Zihan Wang Fengming Hui Xiao Cheng A Machine Learning-Reconstructed Dataset of River Discharge, Temperature, and Heat Flux into the Arctic Ocean Scientific Data |
| title | A Machine Learning-Reconstructed Dataset of River Discharge, Temperature, and Heat Flux into the Arctic Ocean |
| title_full | A Machine Learning-Reconstructed Dataset of River Discharge, Temperature, and Heat Flux into the Arctic Ocean |
| title_fullStr | A Machine Learning-Reconstructed Dataset of River Discharge, Temperature, and Heat Flux into the Arctic Ocean |
| title_full_unstemmed | A Machine Learning-Reconstructed Dataset of River Discharge, Temperature, and Heat Flux into the Arctic Ocean |
| title_short | A Machine Learning-Reconstructed Dataset of River Discharge, Temperature, and Heat Flux into the Arctic Ocean |
| title_sort | machine learning reconstructed dataset of river discharge temperature and heat flux into the arctic ocean |
| url | https://doi.org/10.1038/s41597-025-05582-9 |
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