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Abstract
Meltwater rivers in Greenland transport large quantities of freshwater from the Greenland ice sheet and local glaciers to the ocean, significantly influencing marine ecosystems and global biogeochemical cycles. With accelerating ice melt due to climate change, understanding the biogeochemistry of these rivers is critical. Here, we present a data set providing comprehensive biogeochemistry data from 28 meltwater rivers in south-western Greenland. Spanning a period from 2017 to 2021, it includes data on nutrients and other ions, trace metals, sediment, radio and water isotopes, microbiology and cyanotoxins, sampled during field campaigns in June and August–September. This data set offers valuable insights for research on glacial meltwater, biogeochemistry and microbiology, addressing key knowledge gaps in these fields.
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Copyright (c) 2025 Sanne M Moedt, Kristian K Kjeldsen, Anders R Johnsen, Andreas P Ahlstrøm, Christian N Albers

This work is licensed under a Creative Commons Attribution 4.0 International License.
Data Availability Statement
Ten additional files, including all data (S1_Sampling_sites.csv, S2_Ions_and_trace_metals.csv, S3_Sediment.csv, S4_Radio_isotopes.csv, S5_Water_isotopes.csv, S6_Microbial_counts.csv, S7_Coliform_Enterobact_16rRNA_ID.csv, S8_Cyanotoxins.csv) a Readme file (READ_ME.txt) and Supplementary Figures S1, 2, 3 (Supplementary_Figure_SI_1_3) are available at: https://doi.org/10.22008/FK2/D1Y8UY.
Supplementary Files
Funding
This study was supported by funding from PROMICE, funded by the Geological Survey of Denmark and Greenland (GEUS) and the Danish Ministry of Climate, Energy and Utilities under the Danish Cooperation for Environment in the Arctic (DANCEA), and the Greenland Integrated Observing System (GIOS) under the Danish Agency for Higher Education and Science. Fieldwork and collection of samples was supported through collaboration with the Government of Greenland. K.K.K. acknowledges support from the Independent Research Fund Denmark (grant ID 10.46540/3103-00234B).Downloads
An annual collection of articles submitted to GEUS Bulletin and published throughout 2025. Published online only. This issue is open for submissions until the end of 2025.
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