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

Coch, Caroline; Juhls, Bennet; Lamoureux, Scott F.; Lafrenière, Melissa J.; Fritz, Michael; Heim, Birgit; Lantuit, Hugues

doi:https://doi.org/10.5194/bg-16-4535-2019

Articles | Volume 16, issue 23

https://doi.org/10.5194/bg-16-4535-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-16-4535-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 16, issue 23

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, Bennet Juhls, Scott F. Lamoureux, Melissa J. Lafrenière, Michael Fritz, Birgit Heim, and Hugues Lantuit

Supplement

https://doi.org/10.5194/bg-16-4535-2019-supplement

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.