Dried, closed-path eddy covariance method for measuring carbon dioxide flux over sea ice.
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Butterworth, Brian J.
Else, Brent G. T.
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The Arctic marine environment plays an important role in the global carbon cycle. However, there remain large uncertainties in how sea ice affects air–sea fluxes of carbon dioxide (CO2), partially due to disagreement between the two main methods (enclosure and eddy covariance) for measuring CO2 flux (FCO2). The enclosure method has appeared to produce more credible FCO2 than eddy covariance (EC), but is not suited for collecting long-term, ecosystem-scale flux datasets in such remote regions. Here we describe the design and performance of an EC system to measure FCO2 over landfast sea ice that addresses the shortcomings of previous EC systems. The system was installed on a 10 m tower on Qikirtaarjuk Island – a small rock outcrop in Dease Strait located roughly 35 km west of Cambridge Bay, Nunavut, in the Canadian Arctic Archipelago. The system incorporates recent developments in the field of air–sea gas exchange by measuring atmospheric CO2 using a closed-path infrared gas analyzer (IR.....
JournalAtmospheric Measurement Techniques
Sustainable Development Goals (SDG)14.3
Essential Ocean Variables (EOV)Inorganic carbon
Best Practice TypeBest Practice
Standard Operating Procedure
CitationButterworth, B. J. and Else, B. G. T.(2018) Dried, closed-path eddy covariance method for measuring carbon dioxide flux over sea ice. Atmopsheric Measurement Techniques, 11, pp.6075-6090,. DOI:https://doi.org/10.5194/amt-11-6075-2018, 2018.
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