Articles | Volume 16, issue 23
Biogeosciences, 16, 4535–4553, 2019
https://doi.org/10.5194/bg-16-4535-2019
Biogeosciences, 16, 4535–4553, 2019
https://doi.org/10.5194/bg-16-4535-2019

Research article 29 Nov 2019

Research article | 29 Nov 2019

Comparisons of dissolved organic matter and its optical characteristics in small low and high Arctic catchments

Caroline Coch et al.

Data sets

Colored dissolved organic matter (cDOM) absorption measurements in terrestrial waters on Herschel Island (Low Arctic) and Melville Island (High Arctic) in 2016 and 2017 Caroline Coch, Bennet Juhls, Scott Lamoureux, Melissa Lafrenière, Michael Fritz, Birgit Heim, and Hugues Lantuit https://doi.pangaea.de/10.1594/PANGAEA.897289

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Short summary
Climate change affects Arctic ecosystems. This includes thawing of permafrost (ground below 0 °C) and an increase in rainfall. Both have substantial impacts on the chemical composition of river water. We compared the composition of small rivers in the low and high Arctic with the large Arctic rivers. In comparison, dissolved organic matter in the small rivers is more susceptible to degradation; thus, it could potentially increase carbon dioxide emissions. Rainfall events have a similar effect.
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