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Measurements of carbon dioxide fluxes over an oligotrophic Boreal river in northern Scandinavia
Mid Sweden University, Faculty of Science, Technology and Media, Department of Ecotechnology and Sustainable Building Engineering. (Ecotechnology group)
Mid Sweden University, Faculty of Science, Technology and Media, Department of Ecotechnology and Sustainable Building Engineering. (Ecotechnology group)ORCID iD: 0000-0002-9183-7388
Mid Sweden University, Faculty of Science, Technology and Media, Department of Ecotechnology and Sustainable Building Engineering. (Ecotechnology group)ORCID iD: 0000-0002-3204-4089
Uppsala universitet.
Show others and affiliations
2018 (English)In: Book of abstracts : Linnaeus ECO-TECH '18: 11th  International conference on establishment of cooperation between companies and institutions in the Nordic countries, the Baltic Sea region and the world / [ed] Yahya Jani, Jelena Lundström, Viveka Svensson, William Hogland, Kalmar: Linnaeus University , 2018Conference paper, Published paper (Other academic)
Abstract [en]

Carbon dioxide (CO2), as one of the major anthropogenic greenhouse gases, is widely acknowledged to contribute to global warming and climate change. Historically, the major focus on the role of the aquatic environment in the carbon cycle has been on the atmosphere-ocean exchange. More recent findings suggest the importance of freshwater (lakes, rivers and streams) as a source for atmospheric CO2. The freshwater contribution is, however, poorly understood, mainly due to a paucity of data, especially from running waters.

To address this issue, eddy covariance (EC) measurements in a large boreal river in Northern Sweden (Indalsälven), are being made as part of a two-year long continual study of the carbon dioxide emissions between the air and water. This is one of the first known studies of its kind where EC measurements are conducted in a river setting. Continual data acquisition began in April 2018, monitoring a variety of general meteorological parameters, turbulent emissions of carbon dioxide, latent, and sensible heat, together with water-side measurements of CO2. The aim of the study is to investigate the temporal control on river carbon dioxide emissions covering timescales from hours to seasons.

This paper describes the ongoing work, and reports on the present status of the project. The primary focus lies on data that indicates a dependence of carbon dioxide flux on wind-speed. Wind speed demonstrates a positive correlation with the measured emissions, with the highest emissions measured corresponding to the directions where the upwind distance to land was greatest, indicating that the wind-generated turbulence has a strong influence on the carbon dioxide emissions over a boreal river.

Place, publisher, year, edition, pages
Kalmar: Linnaeus University , 2018.
Keywords [en]
Carbon flux, Eddy covariance measurements, Boreal river
National Category
Environmental Sciences Climate Research
Identifiers
URN: urn:nbn:se:miun:diva-35024ISBN: 978-91-88898-28-9 (electronic)OAI: oai:DiVA.org:miun-35024DiVA, id: diva2:1267672
Conference
Linnaeus Eco-Tech18, Kalmar, Sweden, November 19-21, 2018
Available from: 2018-12-03 Created: 2018-12-03 Last updated: 2019-01-15Bibliographically approved

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Waller, JudithAndersson, AndreasJonsson, Anders

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